Washing your hands works, but it’s not the only step you can take to stay healthy this season. (Harry Vorsteher/Corbis)
You wash your hands as much as a surgeon (and nearly as thoroughly), but sometimes it still isn’t enough to ward off colds and the flu. It’s time to attack from another angle.
"Using hand sanitizer, regularly washing your hands, and avoiding people who are sick are the best ways to prevent against colds, but anything that boosts your immune system will make you less likely to become ill," infectious disease specialist Chia Wang, MD, of Virginia Mason Hospital and Seattle Medical Center, told Yahoo Health.
Try these surprising strategies to give your immune system a leg up.
1. Pop probiotics
The beneficial bacteria in your gut plays a role in keeping your immune system healthy, Wang explained. This year, scientists discovered some of the first strong evidence that probiotics — bacteria that help improve the balance of good to bad bugs in your gut — may help protect you against colds.
Some small studies over the past several years had shown that probiotics may boost immunity in endurance athletes, who tend to have dampened immune systems. But in August 2014, a study in the journal Clinical Nutrition provided evidence that probiotics may also help healthy people avoid colds. In the study, 465 adults took either a probiotic supplement or a placebo for 150 days (about five months). People who took probiotics had a 27 percent lower risk of developing an upper respiratory infection during the study period.
The study’s authors also found there was no difference in results between the two probiotic formulas they tested — Bifidobacterium animalis, or a combination of Lactobacillus acidophilus and a different strain of Bifidobacterium animalis.
2. Drink red wine in moderation
Although heavy drinking and binge drinking can impair your immune system, some research shows that moderate alcohol intake may protect against the common cold. A landmark study in the American Journal of Epidemiology looked at nearly 4,300 Spanish adults during one cold and flu season. People who drank more than 14 glasses of wine weekly had a 40 percent lower risk of coming down with a cold, compared to people who didn’t drink. Red wine was especially helpful, the study found. Beer and liquor didn’t offer any protection against getting sick.
More recently, a study in the European Respiratory Journal followed more than 47,000 Denmark residents for an average of 12 years. At the beginning of the study, the subjects filled out surveys about their alcohol intake. Researchers then kept tabs on a national patient registry to track patients who were hospitalized for pneumonia. They found that men who didn’t drink alcohol and men who consumed more than 35 drinks per week had a higher risk of pneumonia hospitalization compared to moderate drinkers. There wasn’t a clear association between alcohol and illness in women, likely because of the relatively small number of heavy female drinkers in the sample, the study authors wrote.
“Antioxidants help support the immune system, which is why antioxidant-rich red wine may have protective effects,” said Wang. “Antioxidants help to get rid of free radicals, which impair the ability of the immune system to work at an optimal level.” She also cautioned to avoid alcoholic beverages once you have a cold, since they can make you dehydrated.
3. Exercise regularly
A little bit of sweat now could ward off sneezing and sniffles later, studies show…
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