Immunity Boosters
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Immunity Boosters

What foods and supplements actually boost your immune system? Test your knowledge with this quiz.

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Immunity Boosters
Immunity Boosters
Question 1 of 20 Correct

True or false: People who exercise have fewer colds and other respiratory infections than inactive people.

Correct! Sorry, that’s incorrect.

The correct answer is: This is true. Exercise can help boost your immune system and keep sickness at bay. Exercise helps the immune system by increasing the production of antibodies and T-cells.

Immunity Boosters
Question 2 of 20 Correct

Which of these nutrients help the immune system?

Correct! Sorry, that’s incorrect.

The correct answer is: Omega-3 fatty acids, found in olive oil, avocado, fish oils and nuts, are immunity boosting nutrients. Avoid trans fats and simple sugars.

Immunity Boosters
Question 3 of 20 Correct

Which of these vitamins is a potent defender against germs?

Correct! Sorry, that’s incorrect.

The correct answer is: All of the above. Adding fruits and vegetables rich in these nutrients to your diet is a good way to boost the health of your immune system.

Immunity Boosters
Question 4 of 20 Correct

Which of these minerals is the most important for maintaining optimal immune function?

Correct! Sorry, that’s incorrect.

The correct answer is: Zinc deficiency will cause marked suppression of the immune system. The recommended daily dose is 8 mg for women and 11 mg for men.

Immunity Boosters
Question 5 of 20 Correct

Which of these vitamins is important to regulating and supporting immune function and can be made in your skin when exposed to sunlight?

Correct! Sorry, that’s incorrect.

The correct answer is: Vitamin D is made in skin exposed to sunlight and is important in supporting immune function. Deficiencies of Vitamin D increase the risk of infection and diabetes.

Immunity Boosters
Question 6 of 20 Correct

True or false: Glutamine supplementation has been shown to boost immune function and fight infection.

Correct! Sorry, that’s incorrect.

The correct answer is: More research is needed. Glutamine supplements have been shown to boost immune function and fight infection and is best demonstrated in endurance athletes and critically ill patients. However, it is not known whether glutamine supplements enhance the immune function of healthy individuals.

Immunity Boosters
Question 7 of 20 Correct

At what age do the thymus and white blood cells of the immune system begin to decline in function?

Correct! Sorry, that’s incorrect.

The correct answer is: Aging has a huge effect on the immune system, especially on white blood cells that destroy germs and viruses and on the thymus gland where they mature. The decline begins in the 30s and by the 70s they do not function well at all.

Immunity Boosters
Question 8 of 20 Correct

True or false: A lack of proper sleep can decrease the production of antibodies needed to fight infections.

Correct! Sorry, that’s incorrect.

The correct answer is: This is true. Even minor sleep disturbances can cause a significant drop in the number of germ-destroying natural killer cells, a type of white blood cells.

Immunity Boosters
Question 9 of 20 Correct

True or false: Exercise in older people helps their immune systems function at the level of people decades younger.

Correct! Sorry, that’s incorrect.

The correct answer is: This is true. Staying fit and lean into your seventies can help your T-cells function at a higher level and significantly better than inactive people of the same age. In one study, the T-cells of fit older women in their seventies functioned at a rate equal to women in their forties.

Immunity Boosters
Question 10 of 20 Correct

What percentage of stressed individuals caught a cold when exposed to the virus?

Correct! Sorry, that’s incorrect.

The correct answer is: In one study, 90 percent of subjects reporting that they were stressed caught a cold when exposed to a virus. The subjects had elevated stress hormones which interfere with the immune system.

Immunity Boosters
Question 11 of 20 Correct

Which of the following can depress your immune system and make it more likely that you will catch a cold?

Correct! Sorry, that’s incorrect.

The correct answer is: All of the above. Smoking damages the nasal hairs, compromises breathing and produces more mucus. Excessive drinking depresses the immune system and dehydration compromises immunity.

Immunity Boosters
Question 12 of 20 Correct

True or false: Beta-carotene does not improve immune function.

Correct! Sorry, that’s incorrect.

The correct answer is: This is false. Beta-carotene is a powerful antioxidant that improves immune function and promotes mucous membrane health. Orange vegetables like carrots, squash and yams are excellent sources of beta-carotene.

Immunity Boosters
Question 13 of 20 Correct

Which of these foods can boost immunity?

Correct! Sorry, that’s incorrect.

The correct answer is: All of the above. Miso, elderberry and carrots are also important elements of an immune boosting diet.

Immunity Boosters
Question 14 of 20 Correct

True or false: Taking vitamin C can boost your immune system and have the effect of making you up to one year younger.

Correct! Sorry, that’s incorrect.

The correct answer is: This is true. Taking 500 milligrams of vitamin C twice a day can have a RealAge effect of making you up to one year younger. You can take it in supplement form or get it in foods such as oranges, tomatoes and bell peppers.

Immunity Boosters
Question 15 of 20 Correct

Which of the following can fight off fungus-related infections?

Correct! Sorry, that’s incorrect.

The correct answer is: Unpasteurized yogurt contains active cultures of Lactobacillus acidophilus. These cultures help prevent an overgrowth of fungus in your body.

Immunity Boosters
Question 16 of 20 Correct

Which of these supplements may help ward off flu?

Correct! Sorry, that’s incorrect.

The correct answer is: North American ginseng is a promising botanical product that may help ward off flu, according to Dr. Oz. People who take it appear to have a lower incidence of viral spread.

Immunity Boosters
Question 17 of 20 Correct

Which of these herbal medicines may help strengthen the immune system?

Correct! Sorry, that’s incorrect.

The correct answer is: All of the above. These herbs, which have been used in Chinese medicine and other traditional medicinal systems, are available in health food stores, online or from traditional Chinese herbalists. Talk with your doctor before starting any herbal regimen.

Immunity Boosters
Question 18 of 20 Correct

True or false: Spices, such as paprika, can boost the immune system.

Correct! Sorry, that’s incorrect.

The correct answer is: This is true. Paprika and saffron may boost the immune system. Other spices, such as cinnamon, garlic, sage and clove may inhibit bacterial growth. Chili peppers may help block tumor growth.

Immunity Boosters
Question 19 of 20 Correct

What commonly used natural remedy for the common cold has not been proven to be effective?

Correct! Sorry, that’s incorrect.

The correct answer is: Clinical studies of echinacea as a treatment for the common cold have not demonstrated any clinical benefit. Other analyses have been conflicting and suggest that echinacea is not helpful for preventing the common cold.

Immunity Boosters
Question 20 of 20 Correct

True or false: Having close friendships may help protect against infectious diseases.

Correct! Sorry, that’s incorrect.

The correct answer is: This is true. The quality of our relationships affects our health and ability to fight off infections. In a study involving the common cold, social support increased subjects' resistance to developing a cold even when they were infected with the virus that causes it.

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You got out of 20 correct. You're a health wiz!

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Cold and Flu

Cold and Flu

Colds and flu are both viral infections, but have different symptoms. With a cold you will have symptoms such as a runny nose or a sore throat. Flu symptoms come on suddenly and may include fever, body aches or vomiting. While the...

re is no cure for either, there are treatments -- chicken soup, nasal sprays, rest -- which can help your feel better.
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