Testosterone therapy is no fountain of youth for older men, though it might help some who are impotent. That’s according to new guidelines from the American College of Physicians — the first from the group to address the issue of treating age-related “low T.” It’s known that men’s testosterone levels decline with age. And for years industry has promoted the idea that men suffer a range of symptoms caused by what’s sometimes described as “male menopause.” The list includes fatigue, weakness, muscle loss, dulled memory and thinking, depression, and dampened libido and erectile dysfunction. Yet for nearly all of those problems, there is no good evidence testosterone therapy helps, the college found in a research review. The only area where there is some benefit, the group says, is in treating sexual dysfunction. On average, studies have found “small improvements” in sexual and erectile function. The lackluster performance in clinical trials is “a bit surprising,” said ACP president Dr. Robert McLean. But, he pointed out, the fact that testosterone wanes with age does not automatically mean that’s behind men’s health issues. And that means replacing testosterone will not necessarily help. That never stopped manufacturers of supplemental testosterone, however. For years, they launched aggressive marketing campaigns warning men of the health effects of age-related declines of the male hormone. Between 2009 and 2013, the number of U.S.…  read on >

High levels of ozone and wood smoke each increase the risk for lung diseases like chronic obstructive pulmonary disease (COPD) among smokers and nonsmokers alike, two new studies find. People with COPD gradually lose their ability to draw a decent breath. Cigarette smoking is the leading cause, but COPD also can be caused by regular exposure to lung irritants. In one study of nearly 1,900 participants, researchers found that exposure to high levels of ozone over a decade increased the likelihood of COPD. For every 5-parts-per-billion increase in 10-year ozone exposure, the risk for COPD increased 16%, the findings showed. The same increase in ozone was also linked with greater odds of emphysema and a worse quality of life, the study authors said. “What really stood out was that the effect was apparent even among current heavy smokers,” said researcher Dr. Nadia Hansel, director of the pulmonary and critical care division at Johns Hopkins University School of Medicine, in Baltimore. “This means that active smoking doesn’t outweigh this effect of ozone.” Even those already at risk for COPD had an additional increased risk with ozone exposure, she added in a university news release. “I think this adds to increasing evidence that there is probably no healthy level of ozone,” Hansel said. Her team’s findings were published online recently in JAMA Internal Medicine. In the second…  read on >

As much as people often love to talk about their feelings, it might be more productive to skip the conversations and write about your worries instead, according to research done at Michigan State University (MSU). The research, published in the journal Psychophysiology, provides the first neural evidence of the benefits of expressive writing, according to lead author Hans Schroder. He’s a former MSU doctoral student who is now doing research at the Laboratory for Translational and Affective Neuroscience at McLean Hospital, in Belmont, Mass. It turns out that writing about your stresses, anxiety and worries can free up your brain to accomplish other tasks more effectively. Researchers have long known that constant worry uses up mental resources. It’s as though anxiety is always running in the background. So when you add on, say, a stressful work project, you automatically force your brain to multitask, which is never a good thing. In the MSU study, Schroder’s team found that the participants who wrote expressively about their feelings were able to offload their worries and allow their brains to run efficiently, like a new hybrid car. On the other hand, study participants who didn’t write about their feelings — and stayed stressed — ended up guzzling more brain gas to accomplish the same tasks, like your parents’ old, inefficient clunker. The key takeaway is that offloading worry…  read on >