Average is nearly 39 inches, CDC researchers find

But aging population and increasing obesity threaten progress

Painkillers frequently cause irregularity

It's as accurate as current methods, but can also confirm recovery, researchers contend

Plus, teen tobacco use fell to new low in 2013, government statistics show

Pelvic muscle exercises, bladder training and weight loss can help, doctors say

1 in 3 Retired NFL Players Will Suffer Neurological Problems, Records Show Missouri Lawmakers Enact 72-Hour Wait Period for Abortions Hospitals Overprescribing Antibiotics, Study Shows

Burn calories and minimize boredom

Low-iron diet may be to blame

Higher use of cheaper types of cholesterol-lowering drugs led to a lower risk of heart problems