Coffee has been credited with everything from preventing depression to boosting weight loss but new research shows that there can be too much of a good thing. Researchers found that drinking more than four cups of coffee a day increase the risk of premature death by 21 percent, says GlobalPost.
The research by the National Coffee Association also found that the mortality risk was more than 50 percent higher in adults under 55 years old. Investigators warn that younger people in particular may need to avoid heavy coffee consumption, while no adverse effects were found in heavy coffee drinkers aged over 55. It was observed that more than 60percent of American adults drink coffee every day, consuming on average just over three cups a day, informs Business Standard.
Coffee stimulates the release of adrenaline, inhibits insulin activity, increases blood pressure, and raises levels of homocysteine, a harmful chemical linked to heart disease and dementia, according to Irish Independent.