Vitamin D deficiency is a real problem in Europe as levels in the blood are low in 50% to 70% of the population. Pérez-López points out that "healthcare professionals should be aware that this is a common problem which affects a large part of the population in Europe, even those who live in sunny places."
I would rather recommend to get out in the sun a Vitamin D is generally synthesized in the body from certain variant of cholesterol and taking Vitamin D supplements can create adverse effects IMHO ( https://web.stanford.edu/group/hopes/cgi-bin/hopes_test/vitamin-d3/ )
Do you realize that you'd practically have to live in the sun to get your Vitamin D levels up to what some people might need? A more realistic/practical approach for this is Vitamin D supplements.
And yet, a large percentage of people is low on vitamin D:
https://www.sciencedaily.com/releases/2012/01/120110102058.htm
I would rather recommend to get out in the sun a Vitamin D is generally synthesized in the body from certain variant of cholesterol and taking Vitamin D supplements can create adverse effects IMHO ( https://web.stanford.edu/group/hopes/cgi-bin/hopes_test/vitamin-d3/ )
I agree with spending more time in the sun. Unfortunately, for many people that seems to be not sufficient.
Citing https://caloriebee.com/vitamins-supplements/Vitamin-D-Deficiency-Why-You-Need-to-Act :
agree ...
Do you realize that you'd practically have to live in the sun to get your Vitamin D levels up to what some people might need? A more realistic/practical approach for this is Vitamin D supplements.
I am not sure of the time required to generate enough Vitamin D. Do you have references for the same ?