Higher Vitamin D (25-OH) was linked to more lean tissue in arms and legs: a 0.03 increase on the study’s scale, not proof of muscle gains.
The 2026 study in Medicine explored [Vitamin D (25-OH)](/biomarkers/nutrients/vitamin-d-25-oh), musc
Yes—lower blood levels were linked to more depression after birth in a study of 326 women.
Researchers measured [Vitamin D (25-OH)](/biomarkers/nutrients/vitamin-d-25-oh) 24–48 hours after delivery. They checked for depression within six w
