The study found a very wide possible range for the extent to which mammography screening reduced the breast cancer death rate.

An article in The Lancet today says that, according to another new analysis, mammography screening prevents breast cancer deaths if studies go on long enough.

As of May, 13 states did not have laws covering mammography screening.

The pooled data show that mammography screening does reduce breast cancer death by 15% for women ages 39 to 49.

Only eight states now mandate insurance coverage of mammography screening.

For the last year or so, scientists have been engaged in a highly technical, and high-profile, debate about how many lives mammography screening can save.

Maybe mammography screening is not as extensive.

The radiologists' group said in a statement that mammography screening should begin at the age of 40, to increase chances of early detection.

Benefits and harms of mammography screening: Understanding the trade-offs.

Probably the most important aspects are health education, prevention, early detection, self-examination and, of course, mammography screening.