Dietary Supplements

Euro Day: Lawrence Cheskin quoted in story about physical changes in the wake of using weight loss drugs.

tthoma8 — Fri, 10 May 2024 16:58:23 +0000

Euro Day: Lawrence Cheskin quoted in story about physical changes in the wake of using weight loss drugs. tthoma8 Fri, 05/10/2024 - 12:58

In This Story

Lawrence J. Cheskin, MD

The “Ozempic face”, a visible sign of excessive weight loss

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Health Conscious: Nutrition graduate student Eli Kalman-Rome and Lilian de Jonge quoted and their research cited in story about supplement use among transmasculine people.

tthoma8 — Fri, 26 Apr 2024 15:59:28 +0000

Health Conscious: Nutrition graduate student Eli Kalman-Rome and Lilian de Jonge quoted and their research cited in story about supplement use among transmasculine people. tthoma8 Fri, 04/26/2024 - 11:59

In This Story

Lilian de Jonge, PhD

Study Investigates Supplement Use Among Transmasculine People

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Transmasculine people report higher dietary supplement use than general population

Mary Cunningham — Mon, 25 Mar 2024 16:27:32 +0000

Transmasculine people report higher dietary supplement use than general population Mary Cunningham Mon, 03/25/2024 - 12:27

In This Story

Kerri LaCharite, PhD

Lilian de Jonge, PhD

New study by Mason MS, Nutrition student Eli Kalman-Rome highlights the need for population-level research on the nutritional needs of transgender people.

More than 1 million people in the United States identify as transgender; however, there is limited research on nutrition-related health outcomes for transgender people. To narrow the research gap, Mason MS, Nutrition student Eli Kalman-Rome investigated common motivations of dietary supplement use in transmasculine people. The study defined transmasculine as people on the transgender and gender-nonbinary spectrum who were assigned female at birth.

Transmasculine people reported a higher use of dietary supplements (65%) compared to the total U.S. population (22.5%), according to the study. 90% of transmasculine participants reported using supplements at some point in their life.

“The lack of research on the nutritional needs of transgender people, including transgender/nonbinary transmasculine people navigating social or medical transitioning and the findings of this study highlight the need for population-level research that ensures that nutritional advice is appropriate for the affected communities,” said Kalman-Rome, first author on the paper. Associate Professor Kerri LaCharite Interim Chair of the Department of Nutrition and Food Studies Lilian de Jonge, and adjunct professor Taylor Wallace were co-authors on the paper.

Transmasculine volunteers completed an online survey detailing dietary supplement use, motivations, and demographic information. General population data was taken from the 20217-2018 National Health and Nutrition Examination Survey.

Transmasculine people reported using nutritional supplements in unique ways as compared to the general population; differences observed included the numbers of supplements used on average, participants’ reasons for taking supplements, and the variety of supplements taken.

Top reported dietary supplements used by transmasculine people included multivitamins (52%), melatonin (52%), vitamin D (46%), vitamin C (35%), fish oil (33%), B-vitamins or B-complex (31%), iron (29%), and green tea (29%). Participants reported the top reasons for dietary supplements included “improving overall health” (60.4%) and “maintaining health” (54.2%).

“It is important to understand the motivations and types of products being used by transmasculine people, as an increased risk of adverse events, due to use of exogenous testosterone, medications, and other factors, may be present,” said de Jonge.

“Dietary Supplement Use in Transmasculine People: Results of an Online Survey of Volunteer Adults” was published online in the Journal of Dietary Supplements in February 2024. The study was not funded.

Topics

Dietary Supplements

Nutritional Supplement

Lilian de Jonge, PhD

admin_alpha — Tue, 20 Oct 2015 23:24:01 +0000

Lilian de Jonge, PhD admin_alpha Tue, 10/20/2015 - 19:24

Acting Chair, Department of Nutrition and Food Studies

Professor, Nutrition

Contact Information

Email: edejonge@gmu.edu

Phone: 703-993-5153
Building: Peterson Hall
Room 4109

CV

Download Lilian de Jonge curriculum vitae (CV) here.

Personal Websites

ORCID

Research Gate

Google Scholar

Biography

Dr. Lilian de Jonge is a professor at the Department of Nutrition and Food Studies. She obtained her PhD degree in nutrition from the Université de Montréal, in Montréal, Canada. After her PhD degree, Dr. de Jonge moved to the Pennington Biomedical Research Center in Baton Rouge, LA where she was a faculty member and the director of the Metabolic Chambers Laboratory, a position she held until 2010. During this time, she developed the Indirect Calorimetry Core Laboratory. As the director of the core, she was involved in the redesign and reprogramming of the metabolic chambers. These chambers have become a model for several other metabolic chambers in the USA, including the NIH/NIDDK and the University of Colorado. At the Pennington Biomedical Research Center, she studied the adaptation of energy expenditure and substrate oxidation to changes in dietary composition and energy balance and the role of physical activity in this adaptation. Dr. de Jonge has collaborated with a large number of investigators on numerous studies, both federally and privately funded, including several long-term multicenter studies such as POUNDS LOST, a two-year intervention exploring the effect of diet composition on long-term weight loss and patient adherence, and CALERIE, a two-year intervention studying the effects of 25 percent caloric restriction on markers of longevity. In September 2010, Dr. de Jonge accepted a staff scientist position at the National Institutes of Health in Bethesda, MD where she was involved in the study of the role sleep and circadian rhythm on obesity.

Research

Research Interests

Energy metabolism
Body composition
Obesity
Metabolic adaptation
Circadian rhythm
Dietary supplements

Publications

Liu G, Dhana K, Furtado JD, Rood J, Zong G, Liang L, Qi L, Bray GA, Smith SR, de Jonge L, Gardner CD, Coul Bl, Sacks FM, Grandjean P, Sun Q. Perfluoroalkyl Substances and Changes in Body Weight and Resting Metabolic Rate in Response to Weight-Loss Diets: The POUNDS Lost Trial. BMJ (submitted)
de Jonge L, Piaggi P, Csako G. Changes in Resting Energy Expenditure in Relationship to Changes in Sleep and Endocrine Variables in Obese Men and Premenopausal Women With Short Sleep Duration. IJO (submitted)
Gallo S, Rhoades S, Sanchez K, de Jonge L, Canales J. The Childhood Health, Education, & Wellness (CHEW) program: A Pilot Trial for an Individualized, Family-Centered and Culturally Adapted Intervention Targeting Childhood Obesity among Latino Children. Acad Ped (submitted)
de Jonge L, Brennan K, Gallo S, Slavin M, Herrick J. Water Consumption Increases Fat Oxidation. Obesity (submitted)
Bray GA, Smith SR, Sutton EF, Redman LM, de Jonge L. Body Compostition and Change in Amino Acids During 8 Weeks of Overfeeding. Obesity (submitted)
De Jonge L. Dairy Consumption in Teenage Girls and the Development of Type 2 diabetes Later in Life. Diabetes Res Open J. (submitted)
Persily A, de Jonge L. Carbon Dioxide Generation Rates for Building Occupants. Indoor Air 2017; https://doi.org/10.1111/ina.12383
de Jonge L, Kitzhaber L. Sleep and Diabetes in Adolescents: A Battle between Physiology and Social Factors. Diabetes Res Open J. 2016; 2(2): e7-e9. doi: 10.17140/DROJ-2-e006
Bray GA, Redman LM, de Jonge L, Rood J, Smith SR. Effect of Three Levels of Dietary Protein on Metabolic Variables during Eight Weeks of Overfeeding. J Clin Invest 2016;101;2836-43 10.
Ravussin E, Redman LM, Rochon J, Das SK, Fontana L, Kraus WE, Romashkan S, Williamson DA, Meydani SN, Villareal DT, Smith SR, Stein RI, Scott TM, Stewart TM, Saltzman E, Klein S, Bhapkar M, Martin CK, Gilhooly CH, Holloszy JO,Hadley EC, Roberts SB; CALERIE Study Group. A 2-Year Randomized Controlled Trial of Human Caloric Restriction: Feasibility and Effects on Predictors of Health Span and Longevity. J Gerontol A Biol Sci Med Sci. 2015;70:1097-104.

Honors and Awards

Top 10 Poster, Bio-behavioral Research Section of The Obesity Society, 2016, Obesity Week
Distinction in Scholarship Award, 2015, American Physiology Association
NIDDK Directors Award, 2012, National Institute of Diabetes and Digestive and Kidney Diseases, NIH

Affiliations

Member

The Obesity Society