Try to maintain ideal body weight. Being overweight increases your death rate from heart disease, diabetes, some cancers and many other illnesses. You are obese if your waist circumference is greater than 35 inches (women) and greater than 40 inches (men).
To lose weight you must exercise more and modify your eating behavior. Slow, steady weight loss of 2 pounds per week is healthier than rapid weight loss.
Exercise at least 3 times per week for at least 30 minutes. One of the best forms of exercise is walking. You just have to consistently walk. More strenuous exercise is even more helpful. If you are over 40, you may want to talk to the doctor prior to beginning an exercise program.