Coffee

Drinking coffee could lower the risk of oral and throat cancer, according to researchers in Japan. A study of 40,000 participants concluded that those who drank one or more cups per day had half the risk, compared with people who did not drink coffee.

A British study linked caffeine to hallucinations. People who drink three or more cups of brewed coffee a day -- or seven or more of instant -- are more likely to see and hear things that aren't there, researchers said.