Depending on where you live, sunlight may not be available and in northern climates, sun produces negligible vitamin D in the winter because the zenith angle is too low.
https://www.ncbi.nlm.nih.gov/pmc/art...98/figure/F23/
So "getting more sun" is not sufficient for many localities for large parts of the years.
Originally Posted by
McBTC
Need more vitamin D? Then, you need more sun... That's the best way to safely get what you need. The top 10 Vitamin D Rich Foods (from wiki) -- I'd steer clear of raw milk tho -- are:
1) Sunlight - Promotes vitamin D synthesis from cholesterol in the skin.
2) Cod liver oil - 1 tsp: 440 IU (over 100% DV)
3) Sardines - 3 ounces: 164 IU (41% DV)
4) Salmon - 3 ounces: 400 IU (100% DV)
5) Mackerel - 3 ounces: 400 IU (100% DV)
6) Tuna - 3 ounces: 228 IU (57% DV)
7) Raw Milk - 1 cup: 98 IU (24% DV)
8) Caviar - 1 oz: 33 IU (8% DV)
9) Eggs - 1 large: 41 IU (10% DV)
10) Mushrooms - 1 cup: 2 IU (1% DV)