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Vitamin C is an important nutrient for immune function. In an earlier post we showed that fewer GrassrootsHealth participants who reported that they usually took supplemental vitamin C experienced a cold compared to those who did not. Today, we’ll explore whether vitamin C also has an impact on the flu.

Using the data you provided for the GrassrootsHealth study, we assessed the effect of supplemental vitamin C intake on the occurrence of the flu. We found that the percent of participants who experienced the flu in the prior 6 months was 32% lower for those who reported that they usually took supplemental vitamin C compared to those who did not.

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This suggests that taking vitamin C alone could reduce the risk of experiencing the flu. In future blog posts we will explore the combined effect of vitamin C, vitamin D, and Omega-3 status on both colds and the flu. These analyses of individual and combined nutrient effects from GrassrootsHealth are possible because YOU provide us with data on multiple nutrients and health outcomes.

How are your nutrient levels for cold and flu season?

Make sure you know your vitamin D level, and take steps to keep it within a target of 40-60 ng/ml or 100-150 nmol/L! Through GrassrootsHealth Nutrient Research Institute, you can also test your essential elements magnesium, copper, zinc and selenium, toxins such as lead, mercury and cadmium, as well as your omega-3 levels, inflammation levels and thyroid stimulating hormone (TSH) level. Find out your levels today! Log on to the shop (click the link below) to get your tests and see for yourself if your level can be improved.

Make sure you track your results before and after, about every 6 months!

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How can I track my nutrient intake and levels over time?

To help you track your supplement use and nutrient levels, GrassrootsHealth has created an online tracking system called myData-myAnswers. For each specific supplement, you can track what days you take it, how much, and many other details. This will help you know your true supplemental intake and what patterns of use work for you to reach and maintain optimum nutrient levels. Check it out today!