Top 5 most difficult hardest nutrition to get requirement from food?
As per the title what are the most difficult or hardest nutrition/mineral/vitamin to make your daily requirements or the most that has to be supplemented?
Posted Oct 9, 2020, 7:31 AM UTC
I'd think vitamin D3 is pretty darn hard to get from food, mostly found in dairy.
D is well absorbed from sun. Supp needed in winter for sure.
No, it is not. Old wives tale. Sun does not emit Vit D. Your body does not produce a lot of Vit D from sun exposure. Again, old wives tale.
Lol what? Vitamin D production is highly dependent on solar exposure, and it is estimated that between 80% and 90% of our vitamin D status stems from UVB-induced production
[removed]
Why you talking nonsense.
Got any sources to back up that claim?
We just don't get efficient Vit D production from our lifestyle. Everybody needs to supplement if they want good levels.
https://pubmed.ncbi.nlm.nih.gov/3030826/
Photosynthesis of vitamin D in the skin: effect of environmental and life-style variables M F Holick PMID: 3030826 Abstract Exposure to sunlight continues to play a major role in providing adequate vitamin D nutrition for most of the population of the world, including those who live in countries that practice fortification of dairy, margarine, and cereal products with vitamin D. During exposure to sunlight, the high-energy UV photons (290-315 nm) penetrate the epidermis and photolyze 7-dehydrocholesterol (provitamin D3) to previtamin D3. Once formed, previtamin D3 undergoes a thermally induced isomerization to vitamin D3 that takes 2-3 days to reach completion. Melanin effectively competes with provitamin D3 for the UV radiation that enters the epidermis and limits its photolysis to previtamin D3. However, this is not the major factor that prevents excess production of vitamin D in the skin of people who are constantly exposed to sunlight. During the initial exposure to sunlight, provitamin D3 is efficiently converted to previtamin D3. However, because previtamin D3 is photolabile, continued exposure to sunlight causes the isomerization of previtamin D3, principally to lumisterol. Thus, no more than 10-20% of the initial provitamin D3 concentrations ultimately end up as previtamin D3. Aging, sunscreens, seasonal changes, time of day, and latitude also significantly affect the cutaneous production of this vitamin-hormone.
My dr literally prescribed me vid D and told me to sit in the sun more
Could You provide proper answer?
Fish liver is rich in vit d and vit a.
vitamin D is added to dairy