Keep Your Immune System Tuned Up
Sufficient sleep, regular exercise and eating healthfully can keep your immune system in good working order and ready to stand up to flu. Research continues to suggest that keeping a lid on stress is essential for a healthy immune system. That's because chronic stress triggers excess production of cortisol, a hormone that suppresses important infection-fighting cells. Consider setting aside 30 minutes each day to listen to soothing, environmental music, which ups the production of immunoglobulin A (IgA) proteins, according to a study that found listening to a half-hour of relaxing music boosted IgA levels in study subjects' saliva.
Regular, "moderately frequent" sex also raises IgA levels, according to researchers who found that sex two to three times a week made for higher IgA levels than either abstinence or more frequent sex. IgA proteins cling to infection-causing microbes and recruit immune cells to battle them. Massage and therapeutic touch also reduce cortisol levels while increasing the population of natural killer cells and infection-fighting white blood cells, according to a 2004 study from the Touch Institutes at the University of Miami School of Medicine.
Ease Up On Nose-blowing
Blowing your nose hard increases pressure in your sinuses, forcing germ-laden mucus further into your nasal passages, according to University of Virginia researchers who used CT scans to track what happened when study subjects blew their noses, sneezed and coughed. Driving viruses deeper into your sinuses can prolong your misery, Schaffner says. Consider loosening nasal secretions with a hot, steamy shower, thenyou can blow your nose with less risk.
Click here to see eight flu-fighting gadgets.
The Last Resort: Antiviral Drugs
If all else has failed and you feel the flu coming on, call your doctor and ask about a prescription for one of the antiviral drugs, such as oseltamivir (Tamiflu) or zanamivir (Relenza). These can "lessen symptoms and shorten the time you are sick by 1 or 2 days," according to the federal Centers for Disease Control and Prevention. "For people with a high-risk medical condition, treatment with an antiviral drug can mean the difference between having a milder illness versus a very serious illness that could result in a hospital stay." Of course, you might want to keep in mind that in rare cases, these medications can make you feel as bad as the flu itself, producing such unpleasant side effects as nausea, vomiting, dizziness, diarrhea, headache or mood changes.
A version of this story previously appeared on ABCNews.com.