dad, you were right

two new reports published online wednesday by the new england journal of medicine suggest my dad is actually much smarter than i give him credit for:

"Most (prostate) cancers tend to grow very slowly and are never a threat and, with the faster-growing ones, even early diagnosis might be too late."

which means that while psa tests are doing exactly what they're supposed to, lot's and lot's of men are needlessly being treated for prostate cancer.