LA CROSSE, WI -

Studies have shown coffee can lower the risk of prostate cancer, decrease the chance of diabetes, and help with depression. But the newest one is linking your morning cups of joe to early death in people under 55.

The findings published in Mayo Clinic Proceedings showed the risk of death for men who drank four cups of coffee a day was more than 50% higher than non-coffee drinkers. That doubled for women.

A registered dietitian says this research has a lot of limits and doesn't prove coffee is the culprit causing the early deaths. "I would be skeptical of saying if I drink more than 4 cups of coffee, I'm going to die early. You have to look at the whole picture here and there's a lot of research that says coffee is beneficial," said Gundersen Health System Registered Dietician Valerie Pampuch.

The authors of the study are interested in learning what's driving people to drink so many cups of coffee each week.

Coffee drinkers on the streets weren't sold on the findings. "I think that it doesn't really depend on what you drink, I think it's just, happens when it happens," said one man. "Life is too short to have limits on your coffee intake,"said another coffee drinker.

Experts are sure that coffee should not replace a good nights sleep. It's also important to drink plenty of water to stay hydrated.