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Yogurt can boost your immune system, say researchers at the University of California at Davis. In a year-long study, subjects who ate 3/4 cup of yogurt a day had 25% fewer colds. More dramatically, subjects who ate two cups of yogurt a day for four months had a fourfold increase in gamma interferon, a substance that fights infection. The benefits lasted for two months after the subjects stopped eating yogurt.
Tomatoes can protect your infection-fighting white blood cells from free radical
damage, according to a study in the American Journal of Clinical Nutrition.Ten subjects who were fed a tomato-rich diet for 3 weeks had 38% less damage to white blood cells than when they ate a tomato-free diet. The researchers believe the benefactor may be lycopene, an antioxidant found in tomatoes. |
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links:
Lycopene--a good reason to eat tomatoes  Food Trends article from Mayo Clinic. The anti-flu diet and Foods with super powers
Two articles from Men’s Health and ABC News. Six secret disease fighters Six foods and what they do: garlic, greens, tomatoes, onions, grapes and soybeans.
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For more about fending off the flu and other bugs, visit 
If you don't eat kale, you're missing the richest source of
the antioxidant lutein. This carotenoid is also concentrated
in collard greens, spinach and other leafy green vegetables.
Frederick Khachik, research chemist at the U.S. Department of
Agriculture, calls lutein "fully as or even more
important to health than beta carotene." He estimates
people need twice as much lutein as beta carotene to stay
healthy.
