This Deficiency Is Linked to Daytime Tiredness and Can Be Devastating – Mercola
Top 5 Signs of Vitamin D Deficiency
Ongoing musculoskeletal pain and achy bones
Frequent illness/infections
Neurological symptoms
Fatigue and daytime sleepiness
Head sweating
- “Calling someone with a vitamin D level of less than 20 ng/ml vitamin D deficient is like calling someone over 400 pounds simply overweight; in both cases a grossly serious understatement.”
See also VitaminDWiki
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Types of evidence that Vitamin D helps brain problems - 2014
