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Inactivity More Deadly Than Obesity, Large New Study Finds

Fresh evidence that just a little bit of exercise, such as 20 minutes walking a day, is extremely beneficial — regardless of whether people are overweight/obese or not — has emerged from a large European study. Being sedentary may be twice as deadly as being obese, a new study suggests.

In fact, the most pronounced reduction in premature death risk was observed among individuals who were normal weight/abdominally lean and “moderately inactive,” compared with those of the same build who were completely inactive, which was defined as having a sedentary job with no reported recreational physical activity.

Looking at this another way, the study — in more than 330,000 men and women — showed that twice as many premature deaths may be attributable to lack of physical activity compared with the number of deaths attributable to obesity, the researchers say.

The results are published online January 14 in the American Journal of Clinical Nutrition by Dr Ulf Ekelund (University of Cambridge, United Kingdom), Dr Heather A Ward (Imperial College London, United Kingdom), and a long list of collaborators on the European Prospective Investigation into Cancer and Nutrition (EPIC).

The risk reduction was seen in normal weight, overweight and obese people, Ekelund said. “We estimated that eradicating physical inactivity in the population would reduce the number of deaths twice as much as if obesity was eradicated,” he said.

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