Rob Stein

Rob Stein is a correspondent and senior editor on NPR's science desk.

An award-winning science journalist with more than 25 years of experience, Stein mostly covers health and medicine. He tends to focus on stories that illustrate the intersection of science, health, politics, social trends, ethics, and federal science policy. He tracks genetics, stem cells, cancer research, women's health issues and other science, medical, and health policy news.

Before NPR, Stein worked at The Washington Post for 16 years, first as the newspaper's science editor and then as a national health reporter. Earlier in his career, Stein spent about four years as an editor at NPR's science desk. Before that, he was a science reporter for United Press International (UPI) in Boston and the science editor of the international wire service in Washington.

Stein is a graduate of the University of Massachusetts, Amherst. He completed a journalism fellowship at the Harvard School of Public Health, a program in science and religion at the University of Cambridge, and a summer science writer's workshop at the Marine Biological Laboratory in Woods Hole, Mass.

Stein's work has been honored by many organizations, including the National Academy of Sciences, the American Association for the Advancement of Science and the Association of Health Care Journalists.

The Food and Drug Administration said Tuesday that it is requiring drugmakers to warn patients that testosterone products may increase the risk for heart attacks and strokes.

Testosterone replacements are approved to treat men with low testosterone related to medical problems, such as genetic deficiencies, chemotherapy or damaged testicles.

A potentially life-threatening gastrointestinal infection is more common than previously estimated, federal health officials reported Wednesday.

The infection, caused by a bacterium known as Clostridium difficile, or C-diff, causes nearly 500,000 illnesses in the United States each year and kills about 29,000, according to the federal Centers for Disease Control and Prevention.

Babies at high risk for becoming allergic to peanuts are much less likely to develop the allergy if they are regularly fed foods containing the legumes starting in their first year of life.

That's according to a big new study released Monday involving hundreds of British babies. The researchers found that those who consumed the equivalent of about 4 heaping teaspoons of peanut butter each week, starting when they were between 4 and 11 months old, were about 80 percent less likely to develop a peanut allergy by their fifth birthday.

Could using a dishwashing machine increase the chances your child will develop allergies? That's what some provocative new research suggests — but don't tear out your machine just yet.

The study involved 1,029 Swedish children (ages 7 or 8) and found that those whose parents said they mostly wash the family's dishes by hand were significantly less likely to develop eczema, and somewhat less likely to develop allergic asthma and hay fever.

For 15 years, Carla Price and her husband's sex life was great. But then things began to change.

"Before, I would want to have sex," says Price, who is 50 and lives in central Missouri. "But over the years my sexual desire has just dwindled to nothing."

Price has no idea why. She's healthy. She's not really stressed out about anything. And she's still totally crazy about her husband.

"It's not that our relationship got boring," Price says. "Because it's actually the opposite — we became closer as we got older together."

When Barbara Marder was diagnosed with lung cancer three years ago, she had part of her right lung removed, went through a round of chemotherapy and tried to move on with her life.

"I had hoped that everything was fine — that I would not create difficulty for my children, that I would get to see my grandchildren grow up," says Marder, 73, of Arnold, Md.

But a routine scan a year later found bad news: The cancer was back — this time in her other lung.

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Vapor produced by electronic cigarettes can contain a surprisingly high concentration of formaldehyde — a known carcinogen — researchers reported Wednesday.

The findings, described in a letter published in the New England Journal of Medicine, intensify concern about the safety of electronic cigarettes, which have become increasingly popular.

As expected, this year's flu vaccine looks like it's pretty much of a dud.

The vaccine only appears to cut the chances that someone will end up sick with the flu by 23 percent, according to the first estimate of the vaccine's effectiveness by the federal Centers for Disease Control and Prevention.

Two medical groups say doctors could replace the Pap smear with a different test to screen many women for cervical cancer.

But that recommendation, included in an "interim guidance" released Thursday, is highly controversial; other experts call it premature.