Vitamin D3 you take isn't as good as a bit of sunlight. But, it's still effective, and most of have jobs that prevent us from getting sunlight during the hours that it's most useful.
It's a lot like taking vit C vs high quality red meat (has the intermediate ascorbate compounds that you convert C into), or fresh fruit. Better than nothing, when doing it better by major life changes is a bit out of reach.
I take a high quality pure encapsulations, liquid, single ingredient D3 sourced from sheep's wool. I believe it's an artificial extraction / refinement process. Anyway, I don't notice much of a difference taking it vs not taking it in the winter. Always take it with eggs. I've done 20,000 iu / day for months. But I instantly noticed a huge difference after an hr tanning. I can't tell if any d supplements actually help or not.
Vitamin D3 you take isn't as good as a bit of sunlight. But, it's still effective, and most of have jobs that prevent us from getting sunlight during the hours that it's most useful.
It's a lot like taking vit C vs high quality red meat (has the intermediate ascorbate compounds that you convert C into), or fresh fruit. Better than nothing, when doing it better by major life changes is a bit out of reach.
I take a high quality pure encapsulations, liquid, single ingredient D3 sourced from sheep's wool. I believe it's an artificial extraction / refinement process. Anyway, I don't notice much of a difference taking it vs not taking it in the winter. Always take it with eggs. I've done 20,000 iu / day for months. But I instantly noticed a huge difference after an hr tanning. I can't tell if any d supplements actually help or not.
Of course sunlight is the best way to get it.
But I don't have the time most days to be out in the sun for 4+ hours--especially today, where it rained for most of the day here.
I take D3 every day, largely on advice I got here years ago.