10/21/2026
Most people think of vitamin D as a bone health nutrient. It does much more than that.
Vitamin D acts more like a hormone than a typical vitamin. It influences gene expression, so it affects nearly every system in your body, including:
Immune function
Mood and brain health
Blood sugar balance
A healthy intestinal lining
Muscle health
That’s why I test every patient’s levels. Deficiency is common, especially in winter when we get less sun.
Always test first and work with your doctor before supplementing.
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