Literally tens of thousands of studies involving Vitamin C have been performed, and a number of these indicate that higher-than-RDA levels may play a role in helping boost the body's immunity by raising levels of antibodies and immune system cells such as phagocytes and neutrophils, as well as interferon, the protein that helps protect us from viral invaders and cancer cells. This may explain Vitamin C's reputation as a powerful cold- and infection-fighter.
The body rapidly excretes Vitamin C, so knowledgeable scientists and doctors often suggest taking it two, three, or even four times a day to prevent big drops in levels of this nutrient. Time-release forms of Vitamin C are also helpful.
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