If trying to follow the progress of healthcare reform is giving you a migraine, and perhaps results of recent balloting have upset your stomach, here’s a little good news from Lindsey Hollenbaugh, writing in the November/December AARP Magazine. Not all of those sometimes-scary bits of advice you grew up with turn out to be true. New studies, Hollenbaugh reports, are busting a few of those myths.
Most of your body heat is lost through your head.
Untrue. This myth likely originated from a 50-year-old military study; subjects enduring extreme cold lost the most heat from their heads. But the head was the only exposed body part, says Rachel Vreeman, M.D., coauthor of Don’t Swallow Your Gum!: Myths, Half-Truths, and Outright Lies About Your Body and Health. The real deal? “You lose heat from whatever is uncovered,” Vreeman says. “There is nothing special about the head.”
Taking vitamin C and zinc will help prevent or shorten a cold.
Taking vitamin C daily won’t prevent illness, and if you consume it after feeling sick, it won’t ease symptoms, studies show. As for zinc, three of four well-designed studies found it ineffective, while a fourth found that zinc nasal gel helped relieve symptoms. But in June the FDA recalled some zinc nasal products, since they’re linked to a loss of sense of smell. Bottom line: There’s no need for extra C, and zinc may actually harm you.
Drug-Free Pain Relief
Here’s one more reason to enjoy your cup of morning joe. In a University of Illinois study, 25 cyclists who consumed the equivalent of about three 8-ounce cups of coffee before working out had significantly less pain while training.
You should drink at least eight cups of water per day.
There’s no medical reason to follow this advice. In 1945 the Food and Nutrition Board of the National Research Council recommended that adults take in 2.5 liters of water per day (about 84.5 ounces), noting that most water comes from food. Many adherents, however, ignored the last part of that statement. Drink up if you’d like, but studies suggest that most people already get enough H2O from what they eat and drink: the average person takes in about 75 ounces of water daily, according to Department of Agriculture surveys.
Illnesses come from cold or wet weather.
Colds and flus come from viruses, not the climate, explains Aaron Carroll, M.D., Vreeman’s co-author. But because some viruses are more common in winter, more people may get sick then. Plus, chilly or rainy weather often results in more people staying inside—and then sharing their icky infections.
From San Francisco, in the balmy sunshine (November? That’s mid-summer) Boomers & Beyond wishes you well.