Most women should start regular breast cancer screenings at age 50, not 40, according to new guidelines released by the U.S. Preventive Services Task Force.

The new recommendations do not apply to the group of women with unusual risk factors.

The group says women ages 50 to 74 should have mammograms less frequently – every two years, rather than every year. And the panel says breast self-exams do no good, and women shouldn't be taught to do them.

What do you think of the new guidelines? And if you are a woman, is this new information a relief or a source of added stress?

Post your comments here, and Heidi will read some of them in the Newsroom, from 9-11am ET