Maintaining a healthy weight and exercising regularly also may play a role in cancer prevention. Being overweight or obese may increase your risk of cancers of the breast, colon, esophagus, kidney, stomach and uterus.  Physical activity can help you avoid obesity by controlling your weight. Physical activity on its own may also lower your risk of cancers of the breast, colon, prostate and uterus.
Try to be physically active for 30 minutes or more on most days of the week. Once you achieve that goal, adding more exercise to your day may reduce your risk of certain cancers further.
Your exercise sessions can include such low-key activities as brisk walking, raking the yard or even ballroom dancing. Safe exercise programs are available for just about everyone. Your doctor or physical therapist can help design one for you.