Author: *ASN Member Contributor

  • ASN Science Policy Fellow Interview: Rebecca Hagedorn

    ASN Science Policy Fellow Interview: Rebecca Hagedorn

    Rebecca Hagedorn, PhD Candidate in Animal and Food Science at West Virginia University and ISPP dietetic intern at the University of Arizona

    Rebecca Hagedorn received her B.S. in Human Nutrition and Foods from West Virginia University and she is now completing her Ph.D. studies in the Animal and Food Science program at West Virginia University. She is an NIH T32 Behavioral and Biomedical Sciences Trainee, a graduate of the Applied Biostatistics Certificate Program through the West Virginia University School of Public Health, and has advanced research training in behavioral analysis and experimental models. Rebecca has been a member of ASN since 2018. (more…)

  • ASN Science Policy Fellow Interview: Jessica Soldavini

    ASN Science Policy Fellow Interview: Jessica Soldavini

    Jessica Soldavini, PhD Candidate in Nutrition at the University of North Carolina at Chapel Hill and Graduate Research Assistant at the UNC Center for Health Promotion and Disease Prevention

    Jessica Soldavini received her B.S. in Nutritional Sciences from the University of California, Berkeley, with a focus in Dietetics, and received her M.P.H. in Community Health Sciences at the University of California, Los Angeles. She is now completing her Ph.D. studies in Nutrition at the University of North Carolina at Chapel Hill. Jessica is a Registered Dietitian and works as a Graduate Research Assistant with the UNC Center for Health Promotion and Disease Prevention. She has been a member of ASN since 2017.

    1. How did you first get involved in nutrition science and research? What led you to be interested in nutrition policy?

    I first became interested in nutrition while I was in high school and decided that I wanted to become a Registered Dietitian. While studying nutritional science as an undergraduate at UC Berkeley I gained a variety of experiences (more…)

  • Do We Need a Plan B for Plan S?

    Do We Need a Plan B for Plan S?

    The Impact of Open Access Publishing on Scholarly Publications and Scientific Societies

    In September 2018, a group of European funding agencies launched “Plan S,” an initiative starting in 2020 that requires that scientific publications resulting from research funded by European funding agencies public grants must be published in Plan S-compliant open access journals or platforms. In December 2018, a delegation led by Robert-Jan Smits, the European Commission’s special envoy on open access, visited with officials of the White House Office of Science and Technology Policy (OSTP) and other U.S. federal agencies as part of an effort to gain broad support for Plan S.

    Scientific societies are evaluating the impact of Plan S on the societies’ scholarly publications if Plan S or a similar open access policy were initiated in the U.S. Learn more about open access publishing, Plan S, and the potential impact of open access publishing models on scholarly publishing and scientific societies.

    Join us for a talk sponsored by the American Society for Nutrition and American Society of Animal Science

    Monday, February 25, 2019, 12:00 – 1:00 pm
    2325 Rayburn House Office Building
    Capitol Hill, Washington, D.C.

    SPEAKERS
    Dr. Teresa A. Davis
    Baylor College of Medicine Dept of Pediatrics
    Dr. James Sartin
    Auburn University College of Veterinary Medicine

    RSVP to sohlhorst@nutrition.org

  • Does iron supplementation improve exercise performance in the absence of anemia?

    Does iron supplementation improve exercise performance in the absence of anemia?

    Iron deficiency anemia and iron deficiency without anemia are the most common diet-related micronutrient deficiency disorders in the world.

    These conditions can impact the oxygen-carrying capacity of red blood cells and iron’s role in oxidative energy production. As a result, those with impaired iron status often experience reduced work capacity. The effects of iron-deficiency anemia on exercise performance are fairly well understood. However, studies also suggest that individuals with depleted body-iron stores who do not have iron-deficiency anemia may also experience changes in physical performance. The impact of simultaneous iron supplementation and aerobic training, especially in untrained subjects, remains unclear. A study conducted by Laura Pompano and Jere Haas (Cornell University) examined the individual and combined effects of iron supplementation and aerobic training on endurance performance in women with iron depletion without clinical iron deficiency. The study results, published in the February 2019 issue of The Journal of Nutrition, show for the first time that iron supplementation improves endurance performance at near-maximal intensities in untrained women exhibiting iron deficiency without anemia.

    A total of 73 sedentary, untrained women exhibiting depleted iron stores but without clinical iron-deficiency anemia were randomly assigned into 4 groups: aerobic training plus supplemental iron, aerobic training plus placebo, no training plus supplemental iron, and no training plus placebo. Subjects were given either a placebo or iron supplement (100 mg of ferrous sulfate), which were taken 2 times a day throughout the 8-week study period. Subjects in the aerobic training group were instructed to pedal 5 days a week on an exercise cycle at 60 revolutions per minute at 75% or 85% of their age-predicted maximum heart rate, with the difficulty increasing each week. Graded exercise tests were performed at baseline and at week 8, along with simultaneous oxygen consumption measurements. Iron status was also measured at baseline and at study completion.

    The results of this study indicate that aerobic training, iron supplementation, and their combination all result in significant improvements in several measures of submaximal exercise performance.

    The results of this study indicate that aerobic training, iron supplementation, and their combination all result in significant improvements in several measures of submaximal exercise performance. However, the effects of iron supplementation were of the same magnitude as those produced from aerobic training, with or without iron supplementation. In other words, improving iron status had no impact on maximal oxygen uptake, a measurement used to assess aerobic fitness, but it did improve endurance at near-maximal intensities. It remains unclear as to why there was no additive benefit of iron supplementation and training together. Nonetheless, this study provides a deeper understanding of the impact of iron status on aerobic fitness in both trained and untrained individuals.  Particularly noteworthy is that the study results suggest that when previously sedentary women exercise at an intensity near their personal maximum, improvements in endurance performance are associated with improved iron status.

    Reference Pompano LM, Haas JD. Increasing Iron Status through Dietary Supplementation in Iron-Depleted, Sedentary Women Increases Endurance Performance at Both Near-Maximal and Submaximal Exercise Intensities. Journal of Nutrition. 2019; 109. In Press. https://doi.org/10.1093/jn/nxy271

    Hennigar SR. Ironing out the Relation between Iron Supplementation and Exercise Performance in the Absence of Anemia.  Journal of Nutrition. 2019; 109. In Press. https://doi.org/10.1093/jn/nxy288

  • Can skipping breakfast increase risk of type 2 diabetes?

    Can skipping breakfast increase risk of type 2 diabetes?

    The prevalence of type 2 diabetes has been dramatically increasing worldwide and is a major health concern. Many well-known lifestyle factors are associated with increased risk of type 2 diabetes; now, a recent study published in the January 2019 issue of The Journal of Nutrition suggests that skipping breakfast should be added to the list. Although previous studies have demonstrated an association between breakfast skipping and type 2 diabetes, this lifestyle choice was treated as a dichotomous variable.

    A research team led by Dr. Aurélie Ballon from the German Diabetes Center hypothesized that not only is there an association between breakfast skipping and type 2 diabetes, but this relation presents in a consistent dose-response manner.

    Data for this study were obtained by a systematic review and meta-analysis of 6 prospective cohort studies on breakfast skipping and risk of type 2 diabetes in adults. Breakfast skipping was analyzed as a continuous variable in order to determine whether the risk increased with increased frequency of breakfast skipping (i.e. a dose-response). The influence of body mass index on the association between breakfast skipping and risk of type 2 diabetes was also considered in the final analysis.

    Nonlinear dose-response meta-analysis indicated that risk of type 2 diabetes increased with every additional day of breakfast skipping, reaching a plateau at 4‒5 days a week. No further increase in risk of type 2 diabetes was observed after 5 days of breakfast skipping per week. This association was partly mediated by obesity, but a positive association persisted after adjustment for obesity, suggesting that other factors might also influence this association. The researchers concluded, “future studies should also focus on breakfast quality.” In other words, would consuming an unhealthy breakfast be better than skipping breakfast altogether?

    Reference Breakfast Skipping Is Associated with Increased Risk of Type 2 Diabetes among Adults: A Systematic Review and Meta-Analysis of Prospective Cohort Studies. Ballon A, Neuenschwander M, Schlesinger S. Journal of Nutrition. 2019; In Press. Breakfast Skipping and Type 2 Diabetes: Where Do We Stand? Mekary RA. Journal of Nutrition. 2019; In Press. https://doi.org/10.1093/jn/nxy284

  • Strategies to improve bone health among Hispanic adults: where do we go next?

    Strategies to improve bone health among Hispanic adults: where do we go next?

    A healthy, balanced diet is important for overall good health, but certain nutrients, such as protein, calcium, vitamin D, potassium, phosphorus, magnesium, and zinc, are particularly important for healthy bones.

    Inadequate intakes of these nutrients increase the risk of bone loss and subsequent risk of osteoporosis, a condition characterized by low bone mineral density. Because dairy foods provide more of these bone-benefiting nutrients per calorie than any other food, consumption of dairy foods has been shown to be positively related to bone mineral density and reduced bone loss over time among a narrow sample of non-Hispanic whites. Although Puerto Rican adults (the second-highest represented subgroup of Hispanics in the United States) have a higher prevalence of osteoporosis and vitamin D deficiency than non-Hispanic whites, the impact of dietary choices on bone health in this population is poorly understood. Findings from a recent study conducted by Drs. Kelsey Mangano, Katherine Tucker, and Sabrina Noel (University of Massachusetts-Lowell) and published in the January 2019 issue of The Journal of Nutrition, reveal a unique dietary pattern that may detrimentally affect bone health.

    To test their hypothesis, a total of 904 participants from the Boston Puerto Rican Osteoporosis Study provided diet information using a culturally tailored food-frequency questionnaire. For this study, dairy food groups included milk, yogurt, fluid dairy (milk + yogurt), cheese, cream and dessert dairy. Bone mineral density was measured using dual-energy X-ray absorptiometry, and vitamin D status was defined as sufficient or insufficient using a standard blood test.

    The researchers found that higher intakes of modified dairy (milk + yogurt + cheese) and milk alone were significantly associated with higher bone mineral density. However, when compared by vitamin D status, total dairy, fluid dairy (milk + yogurt), and milk intake were significantly related to higher bone mineral density only among those with vitamin D sufficiency. Calcium and vitamin D intakes from all foods were lower than in the Dietary Guidelines, whereas protein intakes were higher compared with other adult populations. The scientists concluded that this unique dietary pattern may detrimentally affect bone health, because dietary protein intakes appear to be protective only under conditions of adequate calcium intake. Potential interventions to improve bone health should include dairy products in combination with public health messages to improve vitamin D sufficiency. Future studies should confirm these findings as well as assess culturally acceptable strategies to improve bone health among Hispanic adults.

    Reference Mangano KM, Noel SE, Sahni S, Tucker KL. Higher Dairy Intakes Are Associated with Higher Bone Mineral Density among Adults with Sufficient Vitamin D Status: Results from the Boston Puerto Rican Osteoporosis Study. Journal of Nutrition. 2019; In Press.

    https://doi.org/10.1093/jn/nxy234

  • Member Highlight Interview: Kevin Klatt, Ph.D. Candidate in Nutritional Sciences at Cornell University

    Member Highlight Interview: Kevin Klatt, Ph.D. Candidate in Nutritional Sciences at Cornell University

    Interview with Kevin Klatt, Ph.D. Candidate in Nutritional Sciences at Cornell University and member of the Executive Board of the ASN Student Interest Group (SIG).

    Kevin Klatt received his B.S. in Biological Anthropology from Temple University with a Minor in Public Health, his M.S. in Human Nutrition at Drexel University, and is completing his Ph.D. studies in the Molecular Nutrition Program at Cornell University’s Division of Nutritional Sciences. Kevin has been an ASN member since 2013, actively involved with the Student Interest Group (SIG) since 2015, most recently as Social Media Specialist, and has contributed to ASN strategic planning initiatives, including the Vision 2028 Summit.

    1. How did you first get involved in nutrition science and research? What made you interested in the field of nutrition and dietetics?

     

    It took me a while to come to the field of nutrition science (or nutritional science? I think we need a session to find consensus on this question at Nutrition 2018). I was first exposed to nutrition through my own efforts losing 85 lbs. in high school. The internet was full of varied information on nutrition and it piqued my curiosity that such vastly differing perspectives could be presented so confidently as factual. I originally went to college as an international business major with concentrations in Italian and Chinese, but quickly switched. Unfortunately, my undergraduate didn’t offer nutrition as a major, so I chose to major in biological anthropology to cover all the broad prerequisites needed to pursue nutrition. Originally, I intended follow a dietetics-only track and do more clinical nutrition—I remember being near-offended when the director of our Honors Program told me that she knew one day I’d find research and love it—She was right! After years of absorbing every possible perspective about nutrition, I realized that while still following dietetics, I would ultimately pursue research and enjoy asking questions and coming up with different ways to respond to those questions.

     

    1. What influenced your decision to join ASN? What convinced you to become involved in ASN?

     

    While taking my dietetics coursework, I heard about the Advances and Controversies in Clinical Nutrition Conference and thought it’d be fun to attend. It cost less to attend for student members, so I applied and joined ASN. I’ve retained my membership and have become more active because the society is a great place to network with other nutrition science focused communities. From a student/ young investigator perspective, I think it’s important to see how associations work from the inside and understand the social and political factors that impact science. Getting more involved with professional societies like ASN have been enormously informative about such factors.

     

    1. What aspects of ASN membership have you found most useful, professionally? What other aspects of your membership do you find useful as your career has progressed?

     

    I used to blog for ASN and found it a great opportunity to generate conversation in the social media space and to hone my writing skills. Science communication is a really interesting discipline and is desperately needed in the era in which the top five Google search results about nutrition questions tell you five different answers from dubious or motivated sources. The conferences (aside from the student discounts) keep me coming back to ASN—these are great for putting faces to the scientists whose work you’re reading and network with them. The conferences are also a great exposure to aspects of nutrition science outside of your typical purview and provide a novel perspective on your own research or inspiration to address a new topic.

     

    1. What aspects of your research do you foresee being most important for ASN members?

     

    My research has several apparent and transparent reminders for ASN members. For students, those mandatory seminar classes may actually be useful! A large part of my dissertation work came about because I attended a seminar, half paid attention, and re-stumbled onto the paper again later and was ultimately inspired to start some work that is now half of my dissertation. This led me to explore the impact of nutrition on a nuclear receptor that no one in nutrition really talks about, using cell and animal model systems and in a human trial. For researchers broadly, I hope my dissertation work (when published/presented at Nutrition2018) reminds people to be intellectual vagabonds, and that nutrients are involved in every biological system being studied by all biological sciences. Whereas much of biology tries to minimize the variability instituted by the nutrition source for their model, nutrition scientists have so many opportunities looking at broad biological findings and viewing this in the context of a manipulatable nutrient-defined milieu—just ask your cell signaling biologist the fatty acid composition of their fetal bovine serum! Also, phospholipids do a lot more than just sit in membranes.

     

    1. Tell us more about your current position and the research activities in which you are involved.

     

    I’m a PhD candidate in the Molecular Nutrition Program at the Division of Nutritional Sciences at Cornell University. Most of my time is spent in the laboratories of both Mark S. Roberson, PhD, and Marie A. Caudill, PhD, RD, where I’ve had the opportunity to work in several projects spanning the reproductive biology to nutrient metabolism spectrum. My dissertation focuses on the impact of diet and reproductive life stage on fatty acid, phospholipid and one carbon metabolism. We are particularly interested in the interactions between the fatty acids, DHA and lauric acid, dietary methyl donors such as choline, and their relevant phospholipid metabolites. Phosphatidylcholine/lysophosphatidylcholine pools of DHA have received much attention in recent years as critical physiological pools of DHA for extrahepatic tissue supply. A unique phosphatidylcholine, dilauroylphosphatidylcholine (DLPC) was recently identified as a ligand for the orphaned nuclear receptor, liver receptor homolog-1 (LRH-1). DLPC is nearly absent from physiological systems and is not indexed in metabolomics databases. I’ve been exploring the impact of dietary lauric acid on the production of DLPC using cell culture, animal feeding, and human controlled feeding experiments, and plan to publish this research soon. Recently, I also started a randomized controlled trial of choline supplementation throughout the second and third trimester of pregnancy to examine its impact on omega-3 fatty acid metabolism and infant cognition.

     

    1. What do you feel are the biggest challenges facing nutrition researchers today? Are there any areas where you would like to see more research?

     

    My three biggest concerns for nutrition researchers are inconsistent funding, methods and public trust. Boom and bust cycles in funding, often tied up in politics leave me worried for the longevity of a career in research. This is a particular concern coming from the viewpoint of someone who doesn’t necessarily want to write grants with grandiose handwaving about solving obesity and related metabolic conditions. I worry about nutrition-related issues that won’t receive the attention or funding needed as the focus shifts toward the prevention and treatment of obesity. As other fields in medicine have moved towards rigorous, double-blind, randomized controlled trials assessing meaningful disease endpoints, it’s a huge challenge for the field to generate data that substantially minimizes uncertainty. Challenges include improving dietary assessment, identifying validated, causal surrogate outcomes, and using preclinical models relevant to human physiology and disease. Unfortunately, this uncertainty may benefit vested entities to generate a buzz in the media and foster public distrust. Thus, a big challenge facing nutrition researchers is the ability to communicate of our research in an interesting manner that conveys its implications and uncertainties equally. This is increasingly difficult in the current media environment where nutrition fuels clickbait headlines, and many actors in this environment seek social capital.

     

    1. Is there anything else you’d like to tell ASN members, especially students?

     

    Dilute your own biases as much as humanly possible. Pre-register all of your studies, collaborate with and befriend investigators with whom you disagree, consciously uncouple from conclusions to which you find yourself married to beyond the evidence, lead with the limitations of your approach, and stay humble knowing that no matter how much you seek the truth, Netflix documentaries will almost certainly have a bigger impact on the public’s eating habits than your research findings.

    Kevin Klatt’s primary research interests are in the field of molecular nutrition, focusing on the impact of dietary factors on relevant phosphatidylcholine signaling and transport molecules. His work utilizes cultured cells as well as animal and human feeding experiments to investigate the impact of dietary choline and fatty acids on phosphatidylcholine synthesis and metabolism. Other interests include the role of metabolism in the development and maturation of the hypothalamic-pituitary-gonadal axis and genetic and environmental factors that regulate placental development and function. a. Kevin enjoys reading about the relevance of nutrition to agriculture, sustainability and social justice, and is passionate about scientific education, especially as it pertains to nutritional sciences. He is a blogger at nutrevolve.blogspot.com, for ASN (nutrition.org/asn-blog), and for the RD site the-sage.org.

     

  • Member Highlight Interview: Patrick Stover, Ph.D.

    Member Highlight Interview: Patrick Stover, Ph.D.

    Dr. Stover graduated from Saint Joseph’s University with a B.S. degree in Chemistry and was awarded the Molloy Chemistry Award at graduation. He received a Ph.D. degree in Biochemistry and Molecular Biophysics from the Medical College of Virginia and performed his postdoctoral studies in Nutritional Sciences at the University of California at Berkeley. Patrick Stover was elected into the National Academy of Sciences in 2016. In 2014, he was elected as a Fellow of the American Association for the Advancement of Science. He also he received the SUNY Chancellor’s Award for Excellence in Scholarship and Creative Activities and the Osborne and Mendel Award for outstanding recent basic research accomplishments in nutrition from the American Society for Nutrition.

    In 2012, he received a MERIT award from NIH’s National Institute of Diabetes and Digestive and Kidney Diseases and in 1999, he received the E.R.L. Stokstad Award in Nutritional Biochemistry from the American Society for Nutritional Sciences. In 1996, Patrick Stover received the Presidential Early Career Award for Scientists and Engineers from President Clinton, the highest honor bestowed by the U.S. government on outstanding scientists and engineers beginning their independent careers, and he has been selected as an Outstanding Educator four times by Cornell Merrill Presidential Scholars. He also serves as Editor for the Annual Review of Nutrition.

    How did you first get involved in nutritional biochemistry and research? What made you interested in the field of nutrition science?

    I caught the research bug through an undergraduate research experience at Saint Joseph’s University. Dr. Nelson’s research group was funded by the Naval Air Development Center and focused on the design, synthesis and function of synthetic prostaglandin oligomers as anti-ischemic agents. Studying the role and biological function of small nutrients became my passion and drove my interest in metabolism and biochemistry. I then studied enzymology and folate metabolism for my doctoral research under the mentorship of Dr. Verne Schirch at the Medical College of Virginia. This experience naturally led to an interest in nutrition and my migration to the University of California at Berkeley, when I studied folate nutrition and metabolism in the research group of Dr. Barry Shane.

    When and why did you first join ASN? What value does ASN continue to provide you?

    I joined ASN much later than I should have. I had regularly attended Experimental Biology and participated in ASN programming since graduate school but was most active in ASBMB. I joined ASN in1999 shortly after I was tenured as an associate professor, initially due to my interest in graduate education. I joined the Graduate Nutrition Education Committee and rose to rank of chair when we published what I believe is still a very important resource for all nutrition graduate programs: J Nutr.2002 Apr;132(4):779-84. ASN became my academic and professional home over the years—where I see old and meet new colleagues and collaborators, where my students present their research findings, where I developed leadership skills, and where I give time and treasure back to the nutrition community.

    What aspects of ASN membership have you found most useful, professionally for you, your faculty and students? What other aspects of your membership do you find useful as your career has progressed?

    All science is now a “social” science—collaboration is critical to address most important research questions. No one can succeed in a vacuum. Understanding how to forge meaningful and constructive partnerships through collaboration is essential to success, and ASN offers numerous opportunities to bring scientists together in an environment that promotes the exchange of ideas. Importantly, ASN also actively promotes mentoring opportunities for students and junior scientists, which has been invaluable for my students.

    What aspects of your research do you foresee being most important for ASN members?

    My bias is that nutrition, in all its dimensions, behaves as a complex dynamic system, and system approaches are needed to provide solutions to the problems we seek to solve. Hence, many of my current collaborators are those expert in systems biology and computer science.

    Can you tell us more about your new position and what you hope to accomplish?

    Perhaps the greatest challenge of our time is harmonizing agriculture, food systems, human health and environmental health. This is essential to address skyrocketing diet-related health care costs, environmental deterioration, and to ensure sustainability of our agriculture systems. Texas, as a national leader in agricultural production, coupled with its Healthy Texas A&M AgriLife Extension initiative, will be a model for aligning healthy and profitable agriculture with healthy people and healthy environments. As Vice Chancellor and Dean of Agriculture and Life Sciences at Texas A&M University and System, I have the privilege of working with the talented faculty, academic staff, students, state-wide agencies and stakeholders to be a national model for excellence in meeting the one-health challenge through research, teaching, Extension and service.

    Is there anything else you’d like to tell ASN members, especially students and postdocs?

    For the students and trainees, do what you love and you’ll love what you do! Strive to become a world-class expert in your field and enjoy as many colleagues as you can. Share your ideas with others, and they will share openly with you. Give back to the community that has given so much to you…perhaps through the ASN Foundation!

     

    The Stover research group investigates the chemical, biochemical, genetic and epigenetic mechanisms that underlie the relationships between one-carbon metabolism and human pathologies including neural tube defects, cardiovascular disease and cancer. Specific interests include the regulation of folate-mediated one-carbon metabolism and genome expression and stability, the molecular basis of the fetal origins hypothesis, development of mouse models to elucidate mechanisms of folate-related pathologies, and translational control of gene expression.

     

  • Submit Your Comments on the 2020-2025 Dietary Guidelines

    Submit Your Comments on the 2020-2025 Dietary Guidelines

    2020-2025 Dietary Guidelines for Americans

    The U.S. Departments of Agriculture (USDA) and Health and Human Services (HHS) are seeking public comments on topics and supporting scientific questions to inform the development of the 2020-2025 Dietary Guidelines for Americans. This is a new step in the development process. View the Federal Register Notice here.

    Topics and questions proposed by USDA and HHS are based on four criteria: relevance, importance, potential federal impact, and avoiding duplication. The topics for 2020-2025 Dietary Guidelines are within a life stages approach, focusing on priority scientific questions from birth through older adulthood. In addition, the topics reflect a continued focus on patterns of what we eat and drink as a whole, on average and over time.
    Submit your comments here.

    Listed below are the five life stages with proposed topics and scientific questions. The guidelines will also describe current dietary patterns, including intakes of food groups and nutrients, for each stage of life.

    Infants and toddlers from birth to 24 months (healthy, full-term infants)

    Topic Question(s)
    Recommended duration of exclusive human milk or infant formula feeding What is the relationship between the duration of exclusive human milk or infant formula consumption and 1) growth, size, and body composition; 2) food allergies and other atopic allergic diseases; and 3) long-term health outcomes?
    Frequency and volume of human milk and/or infant formula feeding What is the relationship between the frequency and volume of human milk and/or infant formula consumption and 1) micronutrient status; and 2) growth, size, and body composition?
    Dietary supplements (e.g., iron, vitamin D, vitamin B12) What is the relationship between specific micronutrient supplements for infants fed human milk and/or infant formula and 1) micronutrient status; and 2) growth, size, and body composition?
    Complementary foods and beverages*: Timing of introduction, types, and amounts

    *Beverages (cow’s milk, water, 100% fruit juice, sugar-sweetened beverages, milk alternatives)

    What is the relationship between complementary feeding and 1) micronutrient status; 2) growth, size, and body composition; 3) developmental milestones; 4) food allergies and other atopic allergic disease; and 5) bone health?

    What is the relationship between complementary feeding, including foods and beverages, and achieving nutrient and food group recommendations of infants and toddlers?

    Note: Evidence related to dietary patterns (including beverage patterns) consumed during the complementary feeding period will be considered as part of these questions.

     

    Children and adolescents, ages 2-18 years old (with data reviewed by age group)

    Topic Question(s)
    Dietary patterns to promote health and normal growth and meet nutrient needs What is the relationship between specific dietary patterns (Dietary Guidelines-related, Mediterranean-style, Dietary Approaches to Stop Hypertension (DASH), vegetarian/vegan, and low-carbohydrate diets) consumed during childhood and adolescence and 1) growth, size, and body composition; and 2) bone health?

    Are changes to the USDA Food Patterns needed based on the relationships identified? If so, how well do USDA Food Pattern variations meet nutrient recommendations for children and adolescents?

    Beverages (cow’s milk, water, 100% fruit juice, sugar-sweetened beverages, milk alternatives, caffeinated beverages) What is the relationship between beverage consumption during childhood and adolescence and achieving nutrient and food group recommendations?
    Added sugars What is the relationship between added sugars consumption during childhood and adolescence and achieving nutrient and food group recommendations?

    How much added sugars can be accommodated in a healthy diet during childhood and adolescence while still meeting food group and nutrient needs?

     

    Adults, ages 19-64 years old (with data reviewed by age group)

    Topic Question(s)
    Dietary patterns to promote health, prevent disease, and meet nutrient needs What is the relationship between specific dietary patterns (Dietary Guidelines-related, Mediterranean-style, Dietary Approaches to Stop Hypertension (DASH), vegetarian/vegan, and low-carbohydrate diets) consumed during adulthood and 1) body weight or obesity; 2) risk of cardiovascular disease; 3) risk of type 2 diabetes; and 4) risk of certain types of cancer?

    Are changes to the USDA Food Patterns needed based on the relationships identified? If so, how well do USDA Food Pattern variations meet nutrient recommendations for adults?

    Beverages (cow’s milk, water, 100% fruit juice, sugar-sweetened beverages, milk alternatives, caffeinated beverages) What is the relationship between beverage consumption during adulthood and achieving nutrient and food group recommendations?
    Added sugars What is the relationship between added sugars consumption during adulthood and achieving nutrient and food group recommendations?

    How much added sugars can be accommodated in a healthy diet during adulthood while still meeting food group and nutrient needs?

    Saturated fats What is the relationship between saturated fats consumption (types and amounts) during adulthood and risk of cardiovascular disease?

     

    Pregnancy and lactation

    Topic Question(s)
    How additional calorie needs should be met during pregnancy and lactation What is the relationship between specific dietary patterns (Dietary Guidelines-related, Mediterranean-style, Dietary Approaches to Stop Hypertension (DASH), vegetarian/vegan, and low-carbohydrate diets) consumed among women who are pregnant and 1) risk of gestational diabetes; 2) risk of hypertensive disorders during pregnancy; 3) gestational age at birth; and 4) birth weight standardized for gestational age and sex?

    What is the relationship between specific dietary patterns (Dietary Guidelines-related, Mediterranean-style, Dietary Approaches to Stop Hypertension (DASH), vegetarian/vegan, and low-carbohydrate diets) consumed among women who are lactating and human milk composition and quantity?

    Are changes to the USDA Food Patterns needed based on the relationships identified? If so, how well do USDA Food Pattern variations meet nutrient recommendations for women who are pregnant or lactating?

    Dietary supplements (e.g., iron, folate, vitamin D) What is the relationship between micronutrient supplements consumed during pregnancy and lactation and 1) micronutrient status; 2) birth outcomes; and 3) human milk composition and quantity?
    Diet during pregnancy and lactation and risk of food allergy in the infant What is the relationship between maternal diet during pregnancy and lactation and risk of infant allergies and other atopic allergic disease?
    Seafood What is the relationship between seafood consumption during pregnancy and lactation and neurocognitive development of the infant?
    Beverages (cow’s milk, water, 100% fruit juice, sugar-sweetened beverages, milk alternatives, caffeinated beverages) What is the relationship between beverage consumption during pregnancy and lactation and 1) achieving nutrient and food group recommendations; 2) birth outcomes; and 3) human milk composition and quantity?
    Alcoholic beverages What is the relationship between maternal alcohol consumption during lactation and human milk composition and quantity?

     

    Older adults, ages 65 years and older (with data reviewed by age group)

    Topic Question(s)
    Dietary patterns to promote health, prevent disease, and meet nutrient needs What is the relationship between specific dietary patterns (Dietary Guidelines-related, Mediterranean-style, Dietary Approaches to Stop Hypertension (DASH), vegetarian/vegan, and low-carbohydrate diets) consumed across the lifespan and 1) body weight or obesity; 2) risk of cardiovascular disease; 3) risk of type 2 diabetes; 4) risk of certain types of cancer; and 5) risk of osteoporosis?

    What modifications to dietary patterns are effective in preventing or reversing declines in muscle mass or bone density in older adults?

    Are changes to the USDA Food Patterns needed based on the relationships identified? If so, how well do USDA Food Pattern variations meet nutrient recommendations for older adults, age 65-80 years and those age 81+ years?

    Specific nutritional needs related to older adults What modifications to food and beverage choices promote meeting nutrient needs in older adults with impaired dentition, dry mouth, or other aspects of aging that interfere with food and beverage consumption?

    Comments are accepted through March 30, 2018. If you have a new topic or question to suggest, provide a brief summary including information pertaining to the four prioritization criteria. After the review of comments and finalization of topics and supporting questions, USDA and HHS will post a public call for the Dietary Guidelines Advisory Committee nominations.

    If you have any suggestions to inform ASN’s comments please reach out to Sarah Ohlhorst, Senior Director of Advocacy and Science Policy, at sohlhorst@nutrition.org or 240-428-3647.

     

     

  • National Nutrition Month 2018

    National Nutrition Month 2018

    March is National Nutrition Month. The campaign promotes healthy eating habits and nutrition education, and it celebrates the people who promote these healthy habits. In 2018, the theme is “Go Further with Food”, highlighting that food decisions make an impact on your overall health.

    Members of the American Society for Nutrition (ASN) are diverse. We study nutrition as a science, reporting on the physiological and biological aspects of foods and nutrients. We are also the nutrition educators and practitioners who get the latest nutrition science into the hands of those who need it: policymakers, dietitians, medical doctors, nurses and allied health professionals, and consumers. To celebrate National Nutrition Month and ASN’s impact on enhancing the knowledge of nutrition and quality of life, we will be highlighting some of our programs and activities that ultimately influence public health and how we can “go further with food.”

    NUTRITION 2018 – American Society for Nutrition’s Annual Meeting

    Nutrition 2018 LogoThis year ASN kicks off a new annual meeting that will focus on the multidisciplinary field of nutrition science. The meeting will bring together basic, translational, clinical, and population scientists and practitioners. The meeting will be held in Boston June 9-12 and registration is open now!

    Some hot nutrition topics at the meeting:

    • Role of Anti-inflammatory Nutrition Strategies
    • Pediatric Nutrition
    • Nutrition and the Environment
    • Precision Nutrition
    • Science of Breastfeeding
    • Food Allergies

    These are only a few topics that are included in the 4-day nutrition meeting. Our NUTRITION 2018 schedule is now open so please refer to it for the latest sessions.

    Stay tuned for more news and a special membership offer for dietitians and nutritionists during National Nutrition Month.