Anxiety is normal, but too much can be crippling; An author and anxiety sufferer discusses the nature of crippling anxiety and what people can do about it.

Only children have been vilified for more than a century as inevitably selfish, spoiled and lonely. Yet research finds that children without siblings are psychologically quite similar to those with brothers and/or sisters. Today the proportion of only children is increasing. Experts refute the myths about only children and discuss how parents can help children navigate life with no siblings.

A look at the top medical headlines for the week of July 15, 2018.

Despite cancer screening’s potential risks, many Americans still want it. Then, a study in the Journal of the American Academy of Dermatology finds those who take aspirin have nearly double the risk of developing melanoma compared to men who don’t take it. And finally, a study from Cornell University finds that natural light produces health benefits and increased productivity.

Many patients want certainty in diagnoses, especially when they've had expensive diagnostic tests. However, those tests are often less certain in their results than people think, making patients sometimes doubt doctors' competence.

New recommendations for earlier colorectal cancer screenings, low rates of folic acid consumption by pregnant women, exercise may not improve prevent cognitive impairment, and more evidence that drinking soda leads to weight gain.

Most people think of military science in terms of defeating the other side. But it also involves keeping our troops sheltered, clothed, fed, and protected from adversaries like exhaustion, infection, heat and noise. A noted investigative journalist explains the less well known side of military research.

Children have up to five times as much asthma and allergies as their grandparents, and a new study shows that an imbalance of gut bacteria in the first year of life may be why. An expert pediatrician discusses why this occurs and ways to address the problem.

As the opioid crisis continues, the city of Vancouver, BC, has found that a harm reduction approach helps addicts move to safer drug use and eventually getting clean. An author who’s watched the process discusses the controversial approach of officially allowing drug use, but in safer conditions.

Researchers may have found the cause of polycystic ovary syndrome, another study showing the impact on brain health from tackle football, and researchers at UCLA may have found an antidote to hangovers.

People injured by foul balls at major league baseball games have little chance of recovering damages against teams because of a more-than century old judicial rule that essentially says fans know the risk they’re taking by attending. Experts explain the rule and recent moves by teams to play it safe.