Smoking and excess weight predict years of disability.
A study of life expectancy and disability among normal weight, overweight, and obese smokers and nonsmokers, found that disability risks increase with greater weight. Being overweight or obese increased the risk of disability by 15% and 64%, respectively. Non-smokers who were overweight or obese experienced 3.6 and 6.1 more years of disability, respectively, compared those of normal weight. Smoking decreased life expectancy more than the years of disability.