Randomized trial: Vitamin D supplementation does not reduce the risk of depression

Effect of Long-term Vitamin D₃ Supplementation vs Placebo on Risk of Depression or Clinically Relevant Depressive Symptoms and on Change in Mood Scores: A Randomized Clinical Trial – JAMA (free for a limited period)

Commentaries: Vitamin D doesn’t prevent depression in older adults, large study finds – CNN AND Large study confirms vitamin D does not reduce risk of depression in adults – Massachusetts General Hospital