- Coffee may prevent type II diabetes and Parkinson's disease, evidence shows
- It may also have anti-cancer and antidepressant effects
- Some people can't tolerate coffee because of side effects
- Doctor: If you don't drink coffee and want to start, ease into it
(CNN)If you can't get through your day without a coffee break or two, here's good news for you: What scientists know so far suggests coffee may help you stay healthy.