smoking is the leading cause of several diseases, such as cancer, long-term (chronic) respiratory diseases, and heart disease, as well as premature death.
90% of lung cancer patients developed their disease because of smoking
Lung cancer is one of the most common causes of cancer deaths in the world.
Smokers not only develop wrinkles and yellow teeth, they also lose bone density, which increases their risk of osteoporosis, a condition that causes older people to become bent over and their bones to break more easily.