Don't smoke or use tobacco.
Smoking and using tobacco are very dangerous habits. Smoking causes 440,000 deaths in the United States every year. More preventable illnesses (such as emphysema, mouth, throat and lung cancer, and heart disease) are caused by tobacco use than by anything else. The sooner you quit, the better.
Limit how much alcohol you drink.
This means no more than 2 drinks a day for men and 1 drink a day for women. One drink is equal to 1 can of beer (12 ounces), a 4-ounce glass of wine or a jigger (1 ounce) of liquor.
Too much alcohol can damage the liver and contribute to some cancers, such as throat and liver cancer. Alcohol also contributes to deaths from car wrecks, murders and suicides.
A healthy diet has many health benefits. Heart disease, certain cancers, stroke, diabetes and damage to your arteries can be linked to what you eat. By making healthier food choices, you can also lower your cholesterol and lose weight.
Exercise can help prevent heart disease, high blood pressure, diabetes, osteoporosis and depression. It can also help prevent colon cancer, stroke and back injury. You'll feel better and keep your weight under control if you exercise regularly. Try to exercise for 30 to 60 minutes, 4 to 6 times a week, but remember that any amount of exercise is better than none.