A new study in the New England Journal of Medicine questions whether surgery is the right treatment for some prostate cancer patients.
Some doctors prefer surgery after diagnosis while others advise just watching and waiting to see if the cancer progresses.
Researchers followed more than 700 prostate cancer patients and found those who had surgery did not live longer than those who did not.
Many doctors believe watching and waiting is the better option because surgery can come with side effects.
A certain kind of fat in the blood may increase the risk of Alzheimer's.
Researchers at the Mayo Clinic linked the fatty compound called ceramide to the disease.
They found seniors with the highest levels in their blood were 10 times more likely to develop Alzheimer's.
Doctors say larger studies will determine if ceramide can one day help diagnose the disease.
And high stress jobs may increase the risk of a heart attack.
Boston researchers followed 22,000 women and found those in the most stressful jobs were 67% more likely to suffer a heart attack.
Previous studies show psychological stress can effect long term cardiovascular health.