Live data from Hacker News

The worthlessness of Vitamin D is mildly exaggerated

dynomight.net

81–90 of 308 posts

Re: The worthlessness of Vitamin D is mildly exaggerated

#81
post #16

Earlier quoted context omitted.

This is how I found my 10k IU of vitamin D a day, based on modern recommendations for indoor workers, that I modulate based on how much I'm outdoors, was perfectly on the mark!

Also an indoor worker. 10K IU daily would have put me far into hypervitaminosis D range. Make sure you test after a very long time, such as a year of steady supplementation. A lot of the excess Vitamin D cases were taking less than 10K IU daily.

> such as a year of steady supplementation.

This is the entire issue. You get vitamin D from the sun. The concept of "steady supplementation" of vitamin D is not logical, unless your sun exposure is also steady, which is where the not-so-useful guidelines come from: some mean of some distribution of some skin tone of sun exposure, leaning on the "less" side of things, with current recommended values based on means from over 50 years ago.

I would never take 10k steady, because I don't live in a cave!

Re: The worthlessness of Vitamin D is mildly exaggerated

#82

Earlier quoted context omitted.

These days it is same with protein... Too much protein fads.

Yeah, you do need daily protein but for most people nowhere near as much as they are taking in. You see these protein bars and some of them basically have a full days worth of the stuff and that is before your other meals come in. There is the YouTube channel 'Subway takes' where people have about a minute to argue a point of view, usually very funny takes as well. There was one that was 'The Protein fad is basically…

>'The Protein fad is basically an eating disorder for men'

This is such a bad take.

The current protein fad isn't being driven by men. Bros have been hyping protein and keto for over a decade.

The current "put protein in everything" fad was driven by women's social media, especially mom influencers. You're seeing the explosion in products women are more likely to shop for.

My wife started buying protein products after getting a flood of Reels talking up its benefits for children and women's health.

Re: The worthlessness of Vitamin D is mildly exaggerated

#83

Your body needs vitamins in order to form complex aminos to operate. But your body only needs to make so many of them - especially if you are an adult, not pregnant, or not suffering from a disease of some sort. The very premise that loading up your body with "excess" vitamins beyond what you need is already pretty fraught. Building a house without enough lumber can lead to long term deficiency - but loading up a con…

These days it is same with protein... Too much protein fads.

I think the difference is that increasing protein intake does offset other worse eating habits. So it's not that you need the protein, but there's a small probability that it replaces calories from refined carbohydrates.

Re: The worthlessness of Vitamin D is mildly exaggerated

#84

Medical doctor here. Please don't get health advice from hn comments. As a matter of fact, I advice against reading anything about health on hn, as the risks of dangerous misinformation far outweigh any useful information you might learn here.

Halp us docter

Re: The worthlessness of Vitamin D is mildly exaggerated

#85
post #64
post #45

Earlier quoted context omitted.

K2 is also known to prevent problems with calcium build up which can happen if Vitamin D is dosed too high. I personally would never take Viramin D without K2 alongside it.

One problem: folks that are on blood thinners shouldn't supplement with vitamin k

If you are on blood thinners you probably shouldn't be taking common advice on anything tbf. Or diabetic. Or heavily allergic. Cause you will straight up die.

Re: The worthlessness of Vitamin D is mildly exaggerated

#86
post #64
post #45

Earlier quoted context omitted.

K2 is also known to prevent problems with calcium build up which can happen if Vitamin D is dosed too high. I personally would never take Viramin D without K2 alongside it.

One problem: folks that are on blood thinners shouldn't supplement with vitamin k

only if the blood thinners taken are vitamin k antagonists (not all are)

Re: The worthlessness of Vitamin D is mildly exaggerated

#88
post #19

Has anyone done a RCT of D3+K2? K2 seems to be important in the absorption of D3. Another aspect that bothers me with these studies is that we’re simply supplementing the vitamin D, seemingly without measuring the change in blood levels. I took 2000IU (+K2) a day for many years in between testing my blood levels and still had <30ng/ml and had to go up to 5000IU/day. I’d like to see some further study.

Were you taking hard tablets? And were you taking them with a fatty meal? Those are both very important. I take a Vitamin D + K2 softgel with a meal that has some fat in it.

Costco sells D3+K2 softgels! Great price, of course.

I started taking them at the recommendation of my podiatrist after I broke my foot last winter (third metatarsal fracture, specifically, ouch).

Re: The worthlessness of Vitamin D is mildly exaggerated

#89

I suspect that blood vitamin D is mainly a marker for how much outdoor exercise people are getting, and that it is the exercise rather than the D which is causal.

My life changed after I got tested for vit D and started talking supplements. I was severely deficient. I am now sufficient and everything changed for me.

I used to take 4k IU + K² and think that I'm covered, since 4K units was a lot.

I landed on just above deficient when tested.

My wife was on kind of same regime, but didn't follow it very strictly. She was deficient, but not extremely.

It was quite surprising, because I got warned when buying 4k unit tabs that they were quite strong and pharmacy clerk suggested taking less.

Re: The worthlessness of Vitamin D is mildly exaggerated

#90
post #45
post #19

Has anyone done a RCT of D3+K2? K2 seems to be important in the absorption of D3. Another aspect that bothers me with these studies is that we’re simply supplementing the vitamin D, seemingly without measuring the change in blood levels. I took 2000IU (+K2) a day for many years in between testing my blood levels and still had <30ng/ml and had to go up to 5000IU/day. I’d like to see some further study.

K2 is also known to prevent problems with calcium build up which can happen if Vitamin D is dosed too high. I personally would never take Viramin D without K2 alongside it.

[dead]
Post reply on HN