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Smoking increases the risk of diseases including cancer, heart disease, lung disease, diabetes. Smoking greatly increases the risk of many serious diseases. Smoking is a major cause of lung cancer and also increases the risk of cancer in the mouth, throat, intestine, bladder, kidney, pancreatic, stomach, ovary and leukemia. About 80% of lung cancers and 80% of lung cancer deaths are caused by smoking. Smoking can also increase the risk of colorectal and liver cancer.
Plaque build-up in the heart arteries: Smoking damages the heart and blood vessels, increasing the risk of heart disease, stroke, and peripheral artery disease. It can cause atherosclerosis (plaque build-up in the arteries), which can obstruct blood circulation. It can increase the risk of heart attack and stroke. Smoking also increases the risk of blood clots, angina, and heart failure.
Lung disease: Smoking is a major cause of chronic obstructive pulmonary disease (COPD), which includes emphysema and chronic bronchitis. It can also worsen asthma symptoms and increase the risk of respiratory tract infections. Smoking can also cause scarring of the lungs (pulmonary fibrosis).
Diabetes: Smoking increases the risk of developing type 2 diabetes and can worsen serious diabetes symptoms, such as heart disease and kidney disease, poor blood flow to the legs and feet, and an increased risk of neurologic infections.
Infections: Smoking weakens immunity, making a person more susceptible to infections including pneumonia, bronchitis and tuberculosis.
Rheumatoid arthritis: Smoking is a risk factor for developing rheumatoid arthritis and other autoimmune diseases.
This can cause serious diseases like cataract
Reproductive health: Smoking can negatively affect fertility in both men and women. And it can increase the risk of complications during pregnancy, such as low birth weight and premature birth.
