Vit D assoc w better cognition in those w sleep disturb + mild cognitive impair

Study was in an elderly cohort with cognitive impairment. This is a cohort more likely to have nutrition and diet problems and spend all of their time indoors. I haven’t found the full study but the results look marginal for a narrow group.

Then there’s this important note in the highlights:

> Higher daily Vitamin D intake may impact cognition in persons with sleep disturbance and MCI.

More is not better with Vitamin D. Correcting deficiencies is good but the mega dosing trend is not.

Not an interventional RCT. This belongs to the useless pile of Vit D observational studies.

The shortened title is incorrect: the “/“ should be “+”.

All those professionals (scientists, doctors, etc.) who for decades told you not to supplement a good dose of vitamin D have been trying to get you killed. Often they work for big pharma or industry interests, and want to peddle million dollar medicines that don't even work right. They would have us live and die in ignorance. It's also no surprise that healthcare expenses are through the roof. Supplemental vitamin D is hurting the business of endocrinologists most of all.

Before you start self-medicating -- "participants had a mean age of 67.2±8.9" and this is a study focusing on people with mild cognitive impairment.

You should see a physician before attempting to treat your poor sleep with vitamin D or melatonin.

Why does every health topic on HN attract so much comment spam?

This was posted 2 hours ago, and right now it's the fearmongerers and pedants. I'm expecting the next wave of comments to be the promoters of bad supplement advice and personal blogs. I'm surprised nobody has mentioned peptides or whatever else yet. That's when you know the discussion has really gone to shit.

Nobody wants to honestly discuss vitamin deficiencies and their impact on quality of life? Most people do have deficiencies. Many of them have otherwise unexplained minor symptoms that are proven to be related to mental health. Vitamin D is at the top of the list. It's worth getting checked out in your routine bloodwork during a doctor visit.

The recommended amounts are what is optimal, but what is strictly necessary is usually far lower. That's why people aren't keeling over and why most of them don't care. Most people have suboptimal diets for a million tangential reasons not worth arguing about. Intake may not even be the problem if you have an undiagnosed endocrine or metabolic issue. Lots of people are prediabetic, drink too much, etc.

I don't think this short list of facts will help, but can we get back on track?