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Patient Aaron Reid receives (CAR) T-cell therapy at the NIH in Bethesda, MD. The process took five minutes to complete. Pearl Mak/NPR hide caption

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Pearl Mak/NPR

Scientists Race To Improve 'Living Drugs' To Fight Cancer

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Vaginal pain and dryness are common symptoms of menopause. Recent research suggests certain types of laser treatment might help when hormones don't. Tim Pannell/Fuse/Getty Images hide caption

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Tim Pannell/Fuse/Getty Images

A study published Wednesday suggests men who wear briefs — tight-fitting underwear — have sperm counts that are, on average, 17 percent lower than men who wear boxers. Michael Cogliantry/Getty Images hide caption

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Michael Cogliantry/Getty Images

Mother Daniele Santos holds her baby Juan Pedro, who has microcephaly, on May 30, 2016, in Recife, Brazil. Researchers are now learning that Zika's effects can appear up to a year after birth. Mario Tama/Getty Images hide caption

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Babies Who Seem Fine At Birth May Have Zika-Related Problems Later, Study Finds

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Evelyn Nussembaum and her son Sam Vogelstein pick up a six month supply of Epidiolex from the experimental pharmacy at UCSF. Lesley McClurg/KQED hide caption

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Lesley McClurg/KQED

How One Boy's Fight With Epilepsy Led To The First Marijuana-Derived Pharmaceutical

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A small new study shows that successful dieters had an abundance of a bacteria called Phascolarctobacterium, whereas another bacteria, Dialister, was associated with a failure to lose weight. sorbetto/Getty Images hide caption

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Diet Hit A Snag? Your Gut Bacteria May Be Partly To Blame

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Northern California's River Fire tore through a canyon near the town of Lakeport early last week, filling orange-tinged skies with smoke for miles around. Noah Berger/AP hide caption

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Noah Berger/AP

California Wildfires Reignite Old Trauma For Survivors Of Last Year's Blazes

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Unless you replenish fluids, just an hour's hike in the heat or a 30-minute run might be enough to get mildly dehydrated, scientists say. RunPhoto/Getty Images hide caption

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Off Your Mental Game? You Could Be Mildly Dehydrated

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Wren Vetens was promised a significant discount on the cost of her gender-confirmation surgery if she paid in cash upfront, without using her health insurance. Yet afterward, Vetens received an explanation of benefits saying the hospital had billed her insurer nearly $92,000. Lauren Justice for KHN hide caption

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Lauren Justice for KHN

Bill Of The Month: A Plan For Affordable Gender-Confirmation Surgery Goes Awry

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Sarah Gonzales for NPR

Marines Who Fired Rocket Launchers Now Worry About Their Brains

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Describing how pain affects your daily activities may be more effective than the standard pain scale. Lynn Scurfield for NPR hide caption

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Lynn Scurfield for NPR

Words Matter When Talking About Pain With Your Doctor

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UCLA researchers are using a radioactive tracer, which binds to abnormal proteins in the brain, to see if it is possible to diagnose chronic traumatic encephalopathy in living patients. Warmer colors in these PET scans indicate higher concentrations of the tracer. UCLA hide caption

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UCLA