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In the name of science, Dr. Nico Dosenbach had scanned his own brain dozens of times. But this was the first time he'd taken a mind-bending substance before sliding into the MRI tunnel. "I was, like, drifting deeper into weirdness," he recalls. "I didn't know where I was at all. Time stopped, and I was everyone." Dosenbach, an associate professor of neurology at Washington University School of Medicine in St. Louis, had been given a high dose of psilocybin, the active substance in magic mushrooms, by his colleagues. (Hamilton, 7/18)

An active ingredient in marijuana could help shield skin from sun damage, according to new research in the Journal of the American Academy of Dermatology. (Goldman, 7/17)

New research makes the case for educating women in their 40s — who've been caught in the crossfire of a decades-long debate about whether to be screened for breast cancer with mammograms — about the harms as well as the benefits of the exam. After a nationally representative sample of U.S. women between the ages of 39 and 49 learned about the pros and cons of mammography, more than twice as many elected to wait until they turn 50 to get screened, a study released Monday in the Annals of Internal Medicine found. (Cohen, 7/17)

The risk of developing ovarian cancer appears to jump about fourfold among women with endometriosis, compared with women who haven’t been diagnosed with the condition, a new study finds. (Howard, 7/17)

As a hematologist-oncologist in Miami, Mikkael Sekeres always hopes his patients will find a perfect match for the bone marrow transplant they need to save their lives — but he doesn’t expect it. Most of his patients are Latino or African American, and rates of perfect matches are much lower for racial or ethnic minorities. That gloomy picture could soon change. (Chen, 7/17)

Researchers who conducted a large study of adults in Denmark, published on Wednesday in the journal JAMA Psychiatry, found something they had not expected: Adults who moved frequently in childhood have significantly more risk of suffering from depression than their counterparts who stayed put in a community. In fact, the risk of moving frequently in childhood was significantly greater than the risk of living in a poor neighborhood, said Clive Sabel, a professor at the University of Plymouth and the paper’s lead author. (Barry, 7/17)

As many as 1 in 4 U.S. adults with depression and anxiety can't pay their medical bills — a situation that could be limiting their ability to get timely psychiatric care, Johns Hopkins researchers found. (Bettelheim, 7/18)

A Novartis executive on Thursday said “it’s too early to say” whether the company would still submit an experimental myelofibrosis drug for regulatory approval this year, amid questions about the medicine’s data profile and whether it’s sufficient for filing. (Joseph, 7/18)