While this effect has been known for more than a century, the study produced evidence.
Publicly, Administration officials say they want to wait to see what other studies produce.
Separate studies of black and white men produced comparable results.
About 20 different studies by two dozen authors have produced similar results.
The second study produced results that were nearly identical to the original survey, the officials said.
New studies on the effects of floating have produced intriguing results.
Previous studies on garlic's health effects have produced mixed results.
The study produced some good news for women who stop smoking, the Harvard researchers said.
Multiple studies have produced conflicting results as to the truth of these claims.
He explores how recent studies have been producing misleading results between the two.