Tobacco use is an important factor in oral health, apart from its role in causing oral cancer. Smokers are more likely than nonsmokers to experience tooth decay and gum disease. Smoking can cause sleep disturbance. Smoking affects physical fitness. Smokers have lower physical endurance than nonsmokers, even when differences in exercise levels are taken into account.
Smoking reduces the ability of the blood to carry oxygen.
Smoking decreases blood flow in the small vessels of the skin, leading to skin wrinkling and an appearance of premature aging. Smoking and the use of oral contraceptives is a dangerous combination, which increases the risk of heart attacks, strokes and other vascular complications. I got this info from people on the internet and the library. Smoking does not one thing good for you, it just destroys your body. Every 10 seconds, someone dies from tobacco use.