Please note that Vit D cannot be produced during 3-5 months in the northen hemisphere due to the sun being too low on the winter months. The best Vit
D production occurs when the sun is at its highest, but that is also harmful if you're not used to the schorching sun near the equator. Human body
was designed to stay outside during the day and not in a cubicile with locked doors. (if someone can find the link it would be great as it gives a lot
more details on the latitudes and months for optimal D production)
Darker skinned people need more exposure to sunlight in order to achieve the same Vit D production (arround 30 mins more).
Also, windows filter out the required UV spectrum required for Vit D production, same goes with sunscreen (be careful with it, be very careful (I'v
got a body full of evidence for this

))
As Im currenty residing in Denmark and the sun is just starting to come back after the winter, people seem to be getting a lot more active and
happier. I strongly believe that it has to do with Vit D production (ofc not only with it, but it plays a major role)
Vit D is one of the most misunderstood vitamins, some people claim it's a necessary steroid to your body.
There has been some research done suggesting that Vit D2 is not effective as Vit D3 (D2 comes from irradiated musrooms, whereas Vit D3 mostly comes
from the wool of sheeps), but theres also studies refuting this claim.
I chose to go with D3, as irradiated mushrooms sound a bit unresting for now.
Take a look at some other vitamin and mineral deficiencys (I cannot claim the accuracy of these tests):
Our Conclusions
○ Iodine – 100% of the diets were deficient in iodine
○ Vitamin D – 95% of the diets were deficient in vitamin D
○ Zinc – 80% of the diets were deficient in zinc
○ Vitamin E – 65% of the diets were deficient in vitamin E
○ Calories – 50% of the diets were deficient in calories
○ Calcium – 50% of the diets were deficient in calcium
www.precisionnutrition.com...
Some more:
Vitamin B6: 80% are deficient.
Magnesium: 75% are deficient
Calcium: 68%
Iron : 57%
Vitamin A: 50%
Thiamine (B1): 45%
Vitamin C: 41%
Vitamin B12: 34%
Riboflavin (B2): 34%
NiacinT: 33%
Phosphorus: 27%
Selenium is also a mineral that is very deficient in soils thoughout the world (in chine they even have a name for a vast region with almost no traces
of selenium present (once again lost all of my links))
Japanese consume arround 100x more Iodine (RDA) than your average american, yet they seem to be doing fine.
This is the problem, which not allows people to swich to a vegetarian diet - lack of knowledge (I'm not a Veg, as I dont know enought to make such a
change, neither am I advocating one, it's just that meat from the slaugher house is a bio-hazard on micro and macro levels)
Take care.