Two new studies have put figures on the number of years obesity takes off a person’s expected lifespan.



An obese 20-year-old man may have his life expectancy cut by as many as 13 years compared with normal-weight people, according to a report released on Tuesday in the Journal of the American Medical Association (JAMA). For an obese 20-year-old woman, the reduction is 8 years, concludes the study based on three decades of data from US mortality studies.



The second study, published on Monday in the Annals of Internal Medicine (AIM), analysed the medical records of 3500 US adults who were middle-aged in 1950. It found that women obese at the age of 40 lost 7.1 years of life, while obese men lost 5.8 years.

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