If you’re a man, you’ve undoubtedly heard that lack of energy or sex drive, trouble concentrating, or feeling down or not quite yourself could be related to low testosterone, or “low T” — and that a little testosterone replacement could have you back on your game. But testosterone replacement is tricky business, and its safety and effectiveness remain controversial. Further, there can be many other causes for the symptoms of “low T.” A thorough evaluation to determine whether low testosterone is really the problem, along with a careful weighing of the potential risks and benefits of testosterone replacement, are essential before considering this drug.
Is brain damage an inevitable consequence of American football, an avoidable risk of it, or neither? An editorial published yesterday in the medical journal BMJ poses those provocative questions. Chad Asplund, director of sports medicine at Georgia Regents University, and Thomas Best, professor and chair of sports medicine at Ohio State University, offer an overview of the unresolved connection between playing football and chronic traumatic encephalopathy, a type of gradually worsening brain damage caused by repeated mild brain injuries or concussions. The big question is whether playing football causes chronic traumatic encephalopathy or whether some people who play football already at higher risk for developing it. The Football Players Health Study at Harvard University hopes to provide a solid answer to that and other health issues that affect professional football players.
If your fingers turn ghostly white and numb when they get cold, you may have Raynaud’s syndrome (or disease or phenomenon). This common condition Raynaud’s is an exaggeration of the body’s normal response to cold. It usually affects fingers and toes, but may also affect the nose, lips, ears, and nipples. Named after the French physician who first described it in 1862, Raynaud’s is a problem in the body’s arteries. They spasm and collapse in response to cold or stress. Without a steady supply of warm blood circulating through them, the affected body part becomes pale. When the spasm ends and the arteries reopen, allowing blood to flow again, the finger, toe, or other body part turns pink or red. It may throb or tingle. Prevention—staying warm—is the best medicine. It’s possible to cut an attack short by running your hands under warm water, putting them in your arm pits, or waving your arms in circles to get the blood flowing. Other options include thermal feedback and relaxation techniques. More experimental options include Botox injections and sildenafil (Viagra).
“Replacing” a hormone the body normally makes when it is running low isn’t necessarily the safest thing to do. Women and their doctors learned this with estrogen after menopause. Now the FDA is sounding a warning that testosterone therapy can cause potentially dangerous blood clots in men. Such blood clots, called deep-vein thrombosis (DVT) and pulmonary embolism kill as many as 180,000 Americans each year, more than the number of people who die from breast, prostate, colon, and skin cancers combined. The new warning is not related to the FDA’s evaluation of possible links between testosterone therapy and stroke, heart attack, and death. Experts recommend testosterone therapy for men with a low testosterone level and one or more of the “classic” symptoms. For the rest? They get a talk-with-your-doctor recommendation. The warnings highlight that taking testosterone isn’t risk free. Combined with the lack of evidence about who really benefits, it means that the decision to start testosterone therapy is an individual one. A man must weigh the potential benefits against the potential increased risks of heart attack, stroke, and blood clots. If the balance tips in favor of moving forward, then trying testosterone is reasonable thing to do.
A study published in JAMA Internal Medicine this week found that men who used the erection-enhancing drug sildenafil (Viagra) were 84% more likely to develop melanoma, the most dangerous form of skin cancer, over a period of 10 years. That finding makes for an attention-grabbing headline. But it doesn’t tell the real story—that the study found an association (not cause and effect), that this hasn’t been seen in other studies of men, and that, even if it holds true, the absolute increase is small, from 4.3 cases of melanoma for every 1,000 men who didn’t take Viagra to 8.6 of every 1,000 men who took it. The take-home message is that it’s important to worry about melanoma—which is largely caused by getting too much sun—but not yet about Viagra and melanoma.
Taking supplements of selenium or vitamin E, once thought to prevent prostate cancer, seems to do just the opposite. A new report shows that men who take vitamin E or selenium are at higher risk for developing prostate cancer. Bottom line: men shouldn’t take selenium or vitamin E as a way to prevent prostate cancer, or anything else for that matter.
Mass marketing of testosterone therapy may have men eager to try this seemingly simple fix. But the latest science should have them scratching their heads and putting away the credit card—at least for now. A new study published in the online journal PLOS One shows an increase in the risk of having a heart attack in the months after starting testosterone therapy. The potential for danger was highest in older men. A report in the November 6, 2013, issue of JAMA showed that men who used testosterone therapy didn’t fare as well after artery-opening angioplasty as men who didn’t take testosterone. Neither was the type of study that can prove cause and effect. They can only show associations, or links. That means there’s no smoking gun here that testosterone therapy is harmful. But the studies do suggest caution. Given the uncertainly over the benefits and risks of testosterone therapy, what’s a man to do? Take a cautious approach, advises the Harvard Men’s Health Watch.
In many men diagnosed with prostate cancer, the cancer cells grow so slowly that they never break free of the gland, spread to distant sites, and pose a serious risk to health and longevity. Instead of embarking on immediate treatment, a growing number of men choose active surveillance, in which doctors monitor low-risk cancers closely and consider treatment only when the disease appears to make threatening moves toward growing and spreading. A new Harvard study shows that the aggressiveness of prostate cancer at diagnosis remains stable over time for most men. If confirmed, then prompt treatment can be reserved for the cancers most likely to pose a threat, while men with slow-growing, benign prostate cancer—which is unlikely to cause problems in a man’s lifetime—can reasonably choose active surveillance.
News out of Seattle is sure to fuel confusion about fish oil supplements. A study by scientists at the Fred Hutchinson Cancer Research Center in Seattle linked eating a lot of oily fish or taking potent fish oil supplements to a 43% increased risk for prostate cancer overall, and a 71% increased risk for aggressive prostate cancer. Fish oil loaded with omega-3 fatty acids, which play important roles in health. Deficiencies in them have been linked to a variety of health problems, including cardiovascular disease, some cancers, mood disorders, arthritis, and more. But that doesn’t mean taking high doses translates to better health and disease prevention. Despite this one study, you should still consider eating fish and other seafood as a healthy strategy. Twice a week is a good goal.
Each year, nearly a quarter of a million American men learn they have prostate cancer. Most are diagnosed with early-stage cancer that has not spread beyond the prostate gland. Traditional treatments include surgery, radiation therapy, and a “watch and wait” strategy called active surveillance. A new study published online this week in JAMA Internal Medicine indicates that diet may be an important add-on. The study, part of the ongoing Harvard-based Health Professionals Follow-up Study, suggests that eating more foods that deliver healthy vegetable oils can help fight the second leading cause of cancer death in men. Earlier studies have implicated the traditional Western diet, which is relatively high in red meat and other sources of animal fats, with a higher risk for developing prostate cancer in the first place, while eating more vegetable oils and vegetable protein may help prevent it.