does chewing tobacco cause lung cancer Health effects of smoking Smoking or smokeless, tobacco harms
Smoking or smokeless, tobacco harms your body in more ways than one. While smoking increases the risk of lung cancer and heart disease, smokeless tobacco can lead to oral cancer, damaged gums Smoking is the number one cause of lung cancer. It causes about 90% of lung cancer cases. Tobacco smoke contains many chemicals that are known to cause lung cancer. If you still Chewing tobacco and smoker's cough Harvard Health How does smoking cause cancer? Cancer Research UK
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