Live data from Hacker News

The Big Vitamin D Mistake

ncbi.nlm.nih.gov

11–20 of 459 posts

Re: The Big Vitamin D Mistake

#12
post #2

what is this saying in plain english? That we all need to take vitamin D supplements?

The recommended daily intake of Vitamin D currently seems to be ~600 IU for adults. This article is arguing that this recommended dosage should be increased thirteen-fold to 8,000 IU for adults.

Re: The Big Vitamin D Mistake

#13
post #3
post #2

what is this saying in plain english? That we all need to take vitamin D supplements?

or better, just spend more time outside.

That drastically increases your odds of skin cancer. If you want to reduce your risk of dying overall, stay covered up and take supplements.

Re: The Big Vitamin D Mistake

#14
This article recommends around 100 nmol/L. Most people are between 20-30, because they don't get enough Sun and do not take supplements. It gets really really bad when the number gets below 10 and it takes months to recover.

Another Vitamin whose deficiency cause irreversible damage is B12. Folks, get both of these checked.

Re: The Big Vitamin D Mistake

#17
post #3

Earlier quoted context omitted.

or better, just spend more time outside.

If you wear clothes and/or aren't near the equator it's not gonna make a big enough of a difference. Also you're gonna have to balance that with negative sun exposure. Salmon is probably a top vitamin d source, but supplements are probably the cheapest way to pack it in.

What if i don't wear clothes and is at the equator

Re: The Big Vitamin D Mistake

#18
Hmm. "Actions are urgently needed to protect the global population from vitamin D deficiency." I wish this sentence wasn't in the abstract, because it's the first thing the "science journalists" are going to latch on to. It's not like people's bones are snapping because everyone has rickets. Maybe not an urgent need, just something we should publish a revised RDA and diet guideline. We had a very different looking food pyramid when I was growing up, but changing it didn't drastically increase life expectancy. Everyone choking down extra vitamins isn't going to fix a non-existent problem.

Re: The Big Vitamin D Mistake

#19
post #3
post #2

what is this saying in plain english? That we all need to take vitamin D supplements?

or better, just spend more time outside.

The amount of disinformation commonly expressed about vitamin D is quite amazing.

Bogus claims:

1. Spend a couple of minutes outside and you will be OK.

2. It is absorbed through the eyes.

3. Deficiencies are rare.

When in fact:

1. Does not apply at any time when your body is covered up mostly. Wear trousers and a T-shirt and you've cut yourself off severely already. Add weather with less sun, sunscreen, and/or more clothes and you've cut yourself off almost entirely unless you are outside for very long periods of time.

2. Fuck no.

3. They are extremely common even in sunny places. In the developed world a majority of people are.

Re: The Big Vitamin D Mistake

#20

This article recommends around 100 nmol/L. Most people are between 20-30, because they don't get enough Sun and do not take supplements. It gets really really bad when the number gets below 10 and it takes months to recover. Another Vitamin whose deficiency cause irreversible damage is B12. Folks, get both of these checked.

I happen to have a gene mutation that makes methylation of B12 inefficient. I never did well in chemistry or biology for that matter, but my limited understanding is that methylation is necessary for it to be useful.

It turns out that you can buy methylated B12 called methylcobalamin. The more common form is cyanocobalamin, and is not very useful for people like myself.

That is my understanding, if anyone here knows better or more, please correct me.

Post reply on HN