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.

Most physicians would choose a do-not-resuscitate or "no code" status for themselves when they are terminally ill, yet they tend to pursue aggressive, life-prolonging treatment for patients facing the same prognosis.

Hypocritical? No, Hippocratic. 

Is that a good thing? You betcha.

V.J. Periyakoil, MD, clinical associate professor of medicine at 
Stanford University Medical Center
and lead author of the paper, says it is a disconnect, but to the public it isn't.  Making a personal choice is one thing, making a social authoritarian decision for a patient is quite another.

People sometimes use indoor tanning in the belief that this will prevent burns when they tan outdoors. However, indoor tanning raises the risk of developing melanoma even if a person has never had burns from either indoor or outdoor tanning, according to a study published May 29 in the JNCI: Journal of the National Cancer Institute.

MINNEAPOLIS – People with high levels of cynical distrust may be more likely to develop dementia, according to a study published in the May 28, 2014, online issue of Neurology®, the medical journal of the American Academy of Neurology.

Cynical distrust, which is defined as the belief that others are mainly motivated by selfish concerns, has been associated with other health problems, such as heart disease. This is the first study to look at the relationship between cynicism and dementia.

Heroin is popular again, though not for reasons you expect. Gone are the days of desperate junkies in poverty settings. Now it is primarily cheap young urban professionals.

Few studies on the demographics of present day heroin users have compared them to heroin users 40 to 50 years ago. In the 1960s, heroin junkies were primarily young men from minority groups living in urban areas. Theodore J. Cicero, Ph.D., of Washington University, St. Louis, and colleagues analyzed data on nearly 2,800 patients from an ongoing study that used self-reported surveys from patients with a heroin use/dependence diagnosis entering treatment centers and also from patients who completed a more detailed interview (n=54).  

Men with gender dysphoria, commonly called gender identity disorder, are born as males but behave as and identify with women and want to change sex.

Around puberty, the testes of men start to produce androstadienone, a musky-smelling steroid produced by men
as a breakdown product of testosterone. Men release it in their sweat, especially from the armpits. Its only known function is to work like a pheromone; when women smell androstadienone, their mood tends to improve, their blood pressure, heart rate, and breathing go up, and they may become aroused. 
 

Evidence for massive and abrupt iceberg calving in Antarctica dating back 19,000 to 9,000 years ago is based on an analysis of new, long deep sea sediment cores extracted from the region between the Falkland Islands and the Antarctic Peninsula. 

The study in Nature documents that the Antarctic ice sheet is unstable and can abruptly reorganize Southern Hemisphere climate and cause rapid global sea level rise. 

Why are some 75-year-olds downright spry while others can barely get around?  Some people who smoke look old from a young age while others don't.

Part of the explanation, say researchers writing in Trends in Molecular Medicine is differences from one person to the next in exposure to harmful substances in the environment. 

A birth date is a chronological age but it might mean little in terms of the biological age of our body and cells. The researchers say that what we need now is a better understanding of the chemicals involved in aging and biomarkers to measure their effects.