Men tend to be more narcissistic than women and as a result are more likely to exploit others, a U.S. study said Thursday after analyzing three decades of data from more than 475,000 people.

The findings were consistent across multiple age groups and generations, said the University at Buffalo School of Management, pointing out that narcissism has good and bad points.

David Mitchell remembers the day he read the memoir of a 13-year-old boy with autism -- hailing it a "revelatory godsend" that offered a window on the life of his own autistic son.

The best-selling author of "Cloud Atlas" said Naoki Higashida was "one of the most helpful and practical writers on the subject of autism in the world."

A study conducted over 20 years in the Los Angeles area has shown that the region's improving air quality has led to children having better functioning lungs, researchers said.

The findings, which tracked 2,000 young people from age 11 to 15, were published in the New England Journal of Medicine.

People who suffer from gout can take comfort in one thing: they may be less likely to develop Alzheimer's disease, researchers said Wednesday.

The same uric acid that can crystallize to cause gout, a form of arthritis, may protect against Alzheimer's, they wrote in the online journal Annals of the Rheumatic Diseases.

Marriages are more likely to end in divorce if the wife takes seriously ill, a U.S. study released Wednesday found.

The research, detailed in the March issue of the Journal of Health and Social Behavior, found that divorce was six percent more likely if the wife fell ill, than if she remained in good health.

After lifting travel restrictions it imposed because of concerns over the Ebola virus, North Korea says foreigners can now take part in one of its most popular tourist events — the annual Pyongyang marathon, a travel agency said Thursday.

Even though no cases of Ebola had been reported anywhere near North Korea, the country shut out foreign tourists in October with some of the strictest Ebola regulations in the world, including saying that only local runners would be allowed into the marathon in April.

The Food and Drug Administration is warning doctors against over-prescribing testosterone-boosting drugs for men, saying the popular treatments have not been established as safe or effective for common age-related issues like low libido and fatigue.

The agency says drugmakers must clearly state in their labeling and promotions that the drugs, currently taken by millions of U.S. men, are only approved to treat low testosterone levels caused by disease or injury, not normal aging.

Doctors may be under-estimating the risks to patients from long-term use of paracetamol, the world's most popular painkiller, researchers said Tuesday.

Chronic users of the drug -- people who typically take large, daily doses over several years -- may increase their risk of death, or kidney, intestinal and heart problems, they found.

The proliferation of new narcotics developed to circumvent existing drug laws poses a serious health problem, the United Nations drugs control body said on Tuesday.

The International Narcotics Control Board (INCB) tasked by the United Nations to oversee the existing legal vacuum with regards to the new drugs makes it easy to market these substances, often over the Internet.

Ubisoft on Tuesday unveiled a tablet video game crafted as a prescription for a medical condition known as "lazy eye," blending the worlds of play and health care.

The France-based video game titan created "Dig Rush" in collaboration with US health technology startup Amblyotech, using treatment technology patented by innovators at McGill University in Canada.