1. Screening for High Cholesterol
The U.S. Preventive Services Task Force recommends a blood test to measure "bad," "good," and total cholesterol (it says every five years is a reasonable interval) for all men 35 and older and for men 20 to 35 who are at increased risk of heart disease. Women 20 and older at higher risk of heart disease should also be screened. But the USPSTF makes no recommendation for or against screening men 20 to 35 or women 20 and over who aren't at higher risk of heart disease, saying there's not enough information on the net benefit. The American Heart Association recommends screening all adults over age 20 every five years.