- Lung, mouth and throat cancers
- Chronic lung diseases and infections
- Congestive heart failure
- Peripheral vascular disease (in the legs and arms)
The threat grows: constant exposure to other people's tobacco smoke increases your risk, even if you don't smoke.
The good news is that when you stop smoking - no matter how long or how much you've smoked - your risk of heart disease and stroke starts to drop. It's cut in half after one year without smoking, then continues to decline until it's as low as a nonsmoker's risk.