Researchers at the Mayo Clinic say heart attacks in Olmsted County dropped by one-third after Minnesota adopted a law banning smoking in all workplaces, including bars and restaurants. The leader of Mayo's study tells Reuters other risk factors -- cholesterol, blood pressure, obesity -- stayed the same, leaving the reduction in second hand smoke as the apparent explanation for the decline.

Researchers from the Mayo Clinic found that volunteers who were sleep-deprived ate more than 500 additional calories per day.

The deadly skin cancer melanoma is turning up in eight times as many young women and four times as many men compared with 40 years ago, according to a new study from Mayo Clinic. The study didn't suggest a cause, but researchers were quick to point to tanning beds.

The partnership between the University of Minnesota, Hormel Foundation and the Mayo Clinic aims to pool their resources together to create a comprehensive research institute -- primarily focusing on cancer.

Immigrants and refugees often arrive in good health, but within a generation many of them are suffering from obesity, diabetes, high blood pressure and other common problems. In what MPR calls a "first-of-its-kind collaboration," Mayo Clinic is partnering with community organizations to teach new arrivals to Minnesota about the importance of diet and exercise.