RCT | Vitamin D supplementation shows no cognitive benefit in mild cognitive impairment intervention

Effects of Exercise Alone or Combined With Cognitive Training and Vitamin D Supplementation to Improve Cognition in Adults With Mild Cognitive Impairment: A Randomized Clinical Trial – JAMA Network Open

Commentary: Exercise and Cognitive Training Slow Thinking Declines. Vitamin D? Not So Much – HealthDay

Related:

RCT | No statistically significant impact of vitamin D on major cardiovascular events

2ry analysis of a RCT | Vitamin D supplementation does not affect cognitive function in older adults

RCT: Oral Vitamin D supplementation (60.000 IU per month) did not reduce mortality in patients 60 years or older (unscreened individuals in Australia, many without insufficiency, average 30ng/mL). Exploratory analyses pointed towards an increased risk of death from cancer.

Randomized Trial: Vitamin D Supplements and Prevention of Cancer and Cardiovascular Disease

Meta-Analysis: Vitamin D Not Effective for Cardiovascular Disease Prevention

Association between vitamin D supplementation and mortality: systematic review and meta-analysis – The BMJ

USPSTF Draft Statement: Insufficient evidence to recommend multivitamin supplements for the prevention of CVD or cancer. The statement also recommends against the use of beta-carotene (increases risk of CVD mortality and lung cancer) or vitamin E (clear evidence of no benefit)

Vitamin D, calcium, other vitamins, and supplements do not prevent cardiovascular diseases