Youth may be idealized but that doesn't mean older people aren't getting busy - they just don't take pictures on their cell phones and post them to Instagram. A new survey found that people in the early years of marriage have sex more frequently, and sexual activity tapers off over time, but then a rebound occurs after 50 years.

Malignant mesothelioma has been found at higher than expected levels in women and in individuals younger than 55 years old in the southern Nevada counties of Clark and Nye, likewise in the same region carcinogenic mineral fibers including actinolite asbestos, erionite, winchite, magnesioriebeckite and richterite were discovered.

Malignant mesothelioma is a fatal cancer associated with asbestos, a set of six naturally occurring silicate minerals, exposure that develops on the outer linings of the lungs. The 3-year survival rate is only 8% and there are limited therapeutic options.

A nationally representative survey shows that natural product use in the United States has shifted since 2007, with some products becoming more popular and some falling out of favor. Overall, natural products (dietary supplements other than vitamins and minerals) remain the most common alternative medicine.

If you think these products rise and fall based on television and diet fads that get mainstream media attention, you would be correct.

A new study from the University of Utah is adding to the small, but growing body of research that links air pollution exposure to suicide.

In research published today in The American Journal of Epidemiology, investigator Amanda Bakian, Ph.D., an assistant professor of psychiatry at the University of Utah, and her colleagues outline chemical and meteorological variables that are risk factors for suicide. Their study, titled "Risk assessment of air pollution and suicide," examines how those factors play out among different genders and age groups. The findings build on other research by Bakian released in April 2014, when she found that fine particulates and nitrogen dioxide in air pollution are linked with an increased risk for suicide.

Taking hormone replacement therapy (HRT) for the menopause, even for just a few years, is associated with a significantly increased risk of developing the two most common types of ovarian cancer, according to a detailed re-analysis of all the available evidence, published in The Lancet.

The findings from a meta-analysis of 52 epidemiological studies, involving a total of 21488 women with ovarian cancer, almost all from North America, Europe and Australia, indicate that women who use HRT for just a few years are about 40% more likely to develop ovarian cancer than women who have never taken HRT.

The "Hockey Stick" graph, a simple plot representing temperature over time, led to the center of the larger debate on climate change, and skewed the trajectory of at least one researcher, according to Michael Mann, Distinguished Professor of Meteorology at Penn State.

"The "Hockey Stick" graph became a central icon in the climate wars," Mann told attendees today last week at the annual meeting of the American Association for the Advancement of Science. "The graph took on a life of its own."