Archive for 2014
Although a long-term study has shown that men who had a vasectomy have a slightly increased risk of developed high-grade prostate cancer, not all experts believe that the link is real.
Feeling young may be one way to keep getting older. In a new study, a pair of researchers from University College London found that older people who felt three or more years younger than their actual age were more likely to be alive eight years later than those who felt more than one year older than their actual age. Does a youthful feeling keep people alive? Possibly: feeling younger may lead to better health habits, like exercising and eating healthfully. Feeling younger may also inspire a sense of resilience that keeps people young.
Getting up at night to use the bathroom is often thought of as a problem mainly for older men. Not so—two in three women over age 40 wake up at least once each night because of a full bladder. And nearly half of them make two or more nighttime trips to the bathroom. Factors that increased the likelihood that a woman woke at night to urinate included older age, having had a hysterectomy, having hot flashes, and using vaginal estrogen. Many of the women had no other urinary problems, such as an overactive bladder or leaking urine when coughing, and many weren’t especially bothered by having to get up at night to urinate. Getting up once or more each night to urinate may not be “bothersome,” but it can still cause problems. It can interfere with sleep. It can also lead to falls and injury.
One way to avoid adding extra pounds over the holiday season is by relying on the glycemic index to choose your foods and snacks. The glycemic index is a measure of how fast carbohydrates are turned into sugar. The higher a food’s glycemic index, the faster your body turns that food into sugar, and the sooner the “hunger bell” rings again. This can set into motion the cycle of holiday overeating. One way to go low glycemic: Choose foods your grandmother used to eat—ones that resemble things in nature, and don’t come with long lists of ingredients.
A growing number of aging men are trying to hold on to their youthful vigor by taking testosterone. Unsettling study results suggest that men with low but “normal” testosterone levels who take a testosterone supplement may be increasing their risk of having a heart attack, stroke, or developing heart disease.
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).
Over the past decade, a barrage of reports linking low vitamin D levels to cancer, heart disease, diabetes, and a host of other ills led many doctors to routinely test vitamin D levels in their healthy patients. But there is no good reason to do that, according to a new recommendation from the U.S. Preventive Services Task Force (USPSTF) published in this week’s Annals of Internal Medicine. The task force concluded that it isn’t helpful for most people to know their vitamin D level, and that even if you have a “low” vitamin D level there’s little evidence that taking a vitamin D supplement will do most people any good.
Nearly one-third of American adults are “excessive” drinkers, but only 10% of them have alcohol use disorder (alcoholism). Those numbers, published yesterday in a national survey, challenge the popular idea that most people who drink too much are alcoholics. The new study, done by researchers with the CDC and the Substance Abuse and Mental Health Service Administration, found that about 70% of all American adults drink alcohol at least now and then, about 30% report excessive drinking, and 3.5% have alcohol use disorder. It is higher among heavy drinkers (10%) and binge drinkers, ranging from 4% among those who report binge drinking once or twice a month to 30% among those who binge drink 10 times or more in a month. The knowledge that only 10% of heavy drinkers are alcoholic may be reassuring, but that doesn’t mean the other 90% aren’t have problems with drinking. Some are what Drs. Robert Doyle and Joseph Nowinski call “almost alcoholics.”
Smartphones and tablets combine an extraordinary amount of portable computing power with connectivity to the world via cell phone signal and WiFi. Many health entrepreneurs are trying to harness that power to help people to get healthier. But do they work? A study published this week in the Annals of Internal Medicine on one popular weight-loss app finds that the answer is “not so much.” University of California, Los Angeles researchers tested one free app called MyFitnessPal. Overweight women who used it lost about five pounds over six months—but so did women who didn’t use the app. In spite of the app’s poor showing in the UCLA trial, MyFitnessPal and other health apps can be useful tools for people who want to manage their weight and lifestyle. But it takes two things from the user—motivation to make a change and using the app enough to produce the desired effect.
Each year, only 40% of U.S. adults get vaccinated against the flu, even though the vaccine is available at doctors’ offices, pharmacies, workplaces, and other venues. Two common reasons people give for avoiding the flu shot are 1) it will give me the flu and 2) it won’t work. Neither are accurate. The virus in a flu shot or nose spray has been killed or made unable to replicate in the human lung. Because the most common strains of flu virus changes from year to year, experts have to predict a year in advance which ones will predominate. Some years the guesses are good and the vaccines are quite effective. Other years the guesses aren’t so good and the vaccines aren’t as protective as they could be. The flu vaccine may be imperfect, but it’s still worth getting. Who should be vaccinated? The Centers for Disease Control and Prevention recommend that everyone over the age of 6 months get vaccinated against the flu every year.