Now, another troubling racial disparity in prostate cancer has surfaced. For reasons that are unclear, black men also fare more poorly during and after prostate cancer surgery than do white men.

Those babyhood staples may seem benign, but they’re implicated in injuries that send about 2,200 children under age 3 to emergency departments every year.

In one study, the CDC and the National Cancer Institute looked at self-reported sun-exposure data for 5,000 people age 18 to 29 collected through the National Health Interview Survey (NHIS) for the years 2000, 2003, 2005, 2008 and 2010. Of those participating in the most recent survey, a whopping 50.1 percent of all adults reported having had at least one sunburn during the preceding 12 months. Among whites, the number was worse: 65.6 percent, or about two-thirds, had been sunburned at least once during that time.

Taking a page, so to speak, from J.K. Rowling’s book, a team of chemical engineers at Monash University in Australia has created a new means of testing and documenting people’s blood types that works much like Tom Riddle’s diary.

A new review of 42 studies of IUDs for emergency contraception found that IUDs inserted within five days of unprotected intercourse prevented pregnancy more than 999 times out of 1,000 — a failure rate below 0.1 percent.

Yauch, who helped make the Beastie Boys band a household name in the mid 1980s, revealed three years ago that he had been diagnosed with salivary parotid gland cancer. Richard Smith, director of the Head and Neck Cancer Program at Montefiore Einstein Center for Cancer Care in Bronx, N.Y., says salivary gland cancers come in “a great variety,” affecting different specific glands within the salivary gland system and carrying differing degrees of lethality.

Having contracted polio at age 6 and, at 18, endured a horrific streetcar accident in which her body was pierced by a metal handrail, Kahlo’s life was marked by neurological problems, chronic pain and other ills, among them infertility. Now a physician has linked Kahlo’s infertility to that accident.

We’re all plenty familiar with the excruciating sensation that consumes us when we consume an icy-cold beverage: That combination of agonizing ache and numbness, the sudden jolt of pain to the brain.

That’s the conclusion drawn by a team of cardiologists, dentists and infectious-disease experts who scoured hundreds of scientific studies to determine whether gum disease may cause heart disease or stroke. Their paper appears as a “scientific statement” in Circulation, a journal of the American Heart Association.