Presidents age twice as fast , is a statement by expert on aging at Cleveland Clinic . Analysis determined by looking at medical records of previous presidents . Effects of stress can be reversed with healthy habits , says Dr. David Roizen . Roizen : He was joking and incredibly quick-witted about current events . Obama has good fitness because of exercising , but smoking does n't help .
Presidents age twice as fast , is a statement by expert on aging at Cleveland Clinic . Analysis determined by looking at medical records of previous presidents . Effects of stress can be reversed with healthy habits , says Dr. David Roizen . Roizen : Obama has good fitness because of exercising , but smoking does n't help .