Nicotine stays in your system for only a few days or less, but withdrawal symptoms from nicotine can last up to weeks.

You may continue to experience symptoms like fatigue or shortness of breath for several months after stopping smoking as your body continues to heal itself. Quitting smoking is a significant step ...

Quitting won’t reverse damage from emphysema or stop it from progressing, but it can slow it down and greatly reduce your symptoms. If you quit smoking after finding out you have emphysema, you might ...

Phillipa Munari suffered nerve pain and exhaustion after she stopped taking antidepressants. She struggled to train her horse, Bella, and "could barely walk because of the withdrawal," said Munari. "I ...