Obesity Linked to Shorter Life

Excess body weight can decrease one’s life expectancy by nearly 10 years, according to a new modeling study.

Written byJef Akst
| 1 min read

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FLICKR, TONY ALTERModeling risk of developing heart disease and type 2 diabetes against obesity, researchers at McGill University in Montreal have found that being excessively overweight can reduce human life by up to nine years, with younger people significantly more affected, according to a study published yesterday (December 4) in The Lancet Diabetes & Endocrinology. Healthy life, free from diabetes or cardiovascular disease, can be shrunk by up to 19 years.

“The pattern is clear,” the authors wrote: “the more an individual weighs and the younger their age, the greater the effect on their health.”

The team, led by McGill’s Steven Grover, used data from the US National Health and Nutrition Examination Survey. The model revealed that excess weight led to just a year or two of lost life in older men and women to up to nine years in men aged 20 to 39 years and seven-and-a-half years in women of the same age. “Healthy life-years lost were two to four times higher than total years of life lost for all age groups and bodyweight categories,” the researchers wrote.

“Meaningful metrics are needed for education, counselling, and health promotion,” Edward Gregg, Chief of the Epidemiology ...

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  • Jef (an unusual nickname for Jennifer) got her master’s degree from Indiana University in April 2009 studying the mating behavior of seahorses. After four years of diving off the Gulf Coast of Tampa and performing behavioral experiments at the Tennessee Aquarium in Chattanooga, she left research to pursue a career in science writing. As The Scientist's managing editor, Jef edited features and oversaw the production of the TS Digest and quarterly print magazine. In 2022, her feature on uterus transplantation earned first place in the trade category of the Awards for Excellence in Health Care Journalism. She is a member of the National Association of Science Writers.

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