Vitamin D3How do you know if you are getting enough? We need to know our vitamin D blood level. Life Extension® offers a reliable vitamin D blood test. In this way we can see how to adjust your personal intake for optimal blood levels of vitamin D. One test gives you a personal baseline reference range. Then to  achieve an optimal level we will work to better your intake through proper supplementation. Recommended Vitamin Supplement(Paid Link)

Find our if you are getting enough Vitamin D from the sun: 

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