Viewing a single comment thread. View all comments

senorkose t1_itvqz7t wrote

Very interested in this topic especially after moving to the PNW from Texas.

My understanding is that analyses from that big VITAL trial showed that vitamin d supplementation did not prevent cancer, cardiovascular disease, or falls; reduce atrial fibrillation, migraine frequency, age related macular degeneration, or knee pain; or improve cognitive function. An ancillary study from VITAL earlier this year also showed that it did not reduce fractures either.

So, from what I gather - vitamin d supplementation has not made a big impact but vitamin d deficiency seems to be linked to a lot of bad stuff… not to mention it may help (and prob can’t hurt) if you live in the cloudy PNW.

of that ancillary study of the VITAL trial in NEJM earlier this year showed no important health benefits from Vit D supplementation in the gen population of older adults,

3

FreydisTit t1_itwpzpw wrote

According to this rebuttal of the study, only 12.7% of the participants tested for vitamin D levels prior to the study (61%) were baseline deficient in Vitamin D. So 39% of participants weren't tested for baseline levels of vitamin D. Also, they did not account for body weight, other Vitamin D supplementation, sunlight exposure, or clothing coverage.

I think the Vital study was examining vitamin D supplementation in general. Not a great design.

3