Photographers like Richard Avedon, Diane Arbus, and Martin Schoeller made their reputations with distinctive visual styles that sometimes required the careful control of lighting possible only in the studio.

2.1 billion people, nearly 30% of the world's population, are overweight, according to a new analysis of data from 188 countries. 

In 1980, the world was still worried about doomsday prophets and a population bomb that would lead to mass starvation, wars over food, and a world government to mandate abortion; instead, agricultural science has grown so much more food that many poor people can afford to eat like royalty and get fat.

Cheap, plentiful food is a win for the world but now we have a major public health epidemic in both the developed and the developing world. 

A multi-institutional team of researchers has pinpointed exactly what goes wrong when chronic lymphocytic leukemia (CLL) patients develop resistance to ibrutinib, a highly effective, precisely targeted anti-cancer drug. In a correspondence published online May 28 in the New England Journal of Medicine, they show how the mutation triggers resistance. Their finding could guide development of new agents to treat drug-resistant disease.

Ibrutinib received accelerated approval from the Food and Drug Administration for use in chronic lymphocytic leukemia in February. It has revolutionized treatment, transforming CLL from a deadly disease to a chronic one. But about eight percent of patients develop resistance to this lifesaving drug.

Circumcision is performed for various reasons, including those that are based on religion, aesthetics, or health, but a paper
in BJU International adds to a growing list of advantages to circumcision; it finds rhat the procedure may help prevent prostate cancer in some men.  

Black trauma patients over the age of 65 are 20 percent less likely to die than white seniors, according to a report in JAMA Surgery.

A nationwide survey indicates that heroin users are attracted to heroin not only for the high, but because it is less expensive and easier to get than prescription painkillers.