Weight cycling is associated with a higher risk of death

November 29, 2018

WASHINGTON--Weight cycling is associated with a higher risk of death, according to a new study published in the Endocrine Society's Journal of Clinical Endocrinology & Metabolism.

Weight cycling, or the constant losing and gaining of weight (usually from diet), leads to adverse health outcomes. By some estimates, 80 percent of people who lose weight will gradually regain it to end up at the same weight or even heavier than they were before they went on a diet. The Endocrine Society's Scientific Statement on the causes of obesity found this was because once an individual loses weight, the body typically reduces the amount of energy expended at rest, during exercise and daily activities while increasing hunger. This combination of lower energy expenditure and hunger creates a "perfect metabolic storm" of conditions for weight gain.

"This study shows that weight cycling can heighten a person's risk of death," said lead study author Hak C. Jang, M.D., Ph.D., Professor, Seoul National University (SNU) College of Medicine and Seoul National University Bundang Hospital in Seongnam, Korea. "However, we also concluded that weight loss as a result of weight cycling can ultimately reduce the risk of developing diabetes in people with obesity."

In the 16-year prospective cohort study, researchers examined 3,678 men and women from the Korean Genome and Epidemiology Study and found weight cycling was associated with a higher risk of death. Interestingly, people with obesity who experienced more weight cycling were less likely to develop diabetes than other study participants. The health benefits of weight loss overshadowed the adverse effects of weight cycling for individuals with obesity looking to lower their diabetes risk.
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Other authors of the study include: Tae Jung Oh, Jae Hoon Moon, Sung Hee Choi, and Soo Lim of SNU College of Medicine and Seoul National University Bundang Hospital; Kyong Soo Park, of SNU College of Medicine and Seoul National University Hospital in Seoul, Korea; and Nam H. Cho, of Ajou University School of Medicine in Suwon, Korea.

The study received support from the Research Program funded by the Korea Centers for Disease Control and Prevention.

The study, "Body-weight Fluctuation and Incident Diabetes, Cardiovascular Disease, and Mortality: A 16-year Prospective Cohort Study" will be published online, ahead of print.

Endocrinologists are at the core of solving the most pressing health problems of our time, from diabetes and obesity to infertility, bone health, and hormone-related cancers. The Endocrine Society is the world's oldest and largest organization of scientists devoted to hormone research and physicians who care for people with hormone-related conditions.

The Society has more than 18,000 members, including scientists, physicians, educators, nurses and students in 122 countries. To learn more about the Society and the field of endocrinology, visit our site at http://www.endocrine.org. @TheEndoSociety and @EndoMedia

The Endocrine Society

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