Study found 21 percent higher chance of accident among those who slept less than 6 hours a night
But at least one expert questions benefits of the alternative treatment
Those who listened to well-loved tunes in study needed less sedation medicine
New survey finds 1 in 7 products still claim an 'SPF' rating of 50 or higher
Researchers looked at men who had the therapy after surgery
Authors say it defines disorders more concisely; critics say it will lead to over-diagnosis and unnecessary treatments
Study found shedding pounds reduced GERD symptoms among overweight, obese patients
But it was phased out because of side effects; newer version works, study notes
Advanced colonoscope has wider range of view than traditional models, picks up more polyps, study finds
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