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By Carla K. Johnson The Associated Press

Shortening trainee doctor hours hasn’t harmed patients

When reforms shortened working hours for U.S. doctors-in-training, some worried: Was that enough time to learn the art of medicine? Would future patients suffer?

Now a study has answers, finding no difference in hospital deaths, readmissions or costs when comparing results from doctors trained before and after caps limiting duties to 80 hours per week took effect.

Promise of marijuana leads scientists on search for evidence

SEATTLE — Marijuana has been shown to help ease pain and a few other health problems, yet two-thirds of U.S. states have decided pot should be legal to treat many other conditions with little scientific backing.

At least 1.4 million Americans are using marijuana for their health , according to an Associated Press analysis of states that track medical marijuana patients.

Science Says: Internet craze behind a brain-tingling beer ad

A new Super Bowl commercial aims to calm frenzied football fans with oddly relaxing images of actress Zoe Kravitz whispering into a pair of microphones and softly tapping on a bottle.

The beer ad already has drawn more than 10 million views and stands to expose a vast audience to an internet craze known as ASMR, or autonomous sensory meridian response.

Science Says: Medications prevent opioid addiction relapse

CHICAGO — Remarks by a top U.S. health official have reignited a quarrel in the world of addiction and recovery: Does treating opioid addiction with medication save lives? Or does it trade one addiction for another?

Health Secretary Tom Price’s recent comments one replying to a reporter’s question, the other in a newspaper op-ed waver between two strongly held views.