Tag: Severe deficiency symptoms

According to research from the National Health and Nutrition Examination Survey (NHANES), nearly a quarter of U.S. adults are considered low in vitamin D. When you're severely low on vitamin D, your body can no longer properly absorb calcium, leading to serious health complications beyond simple tiredness, including weakened bones and impaired immune function.

According to the National Institutes of Health, a vitamin D level below 12 ng/mL is classified as deficient and can be detrimental to overall health. Understanding **what happens if your vitamin D is at 12** is crucial, as this critically low level impacts far more than just bone health, influencing mood, immunity, and muscle function as well.