I live in the golf hub of the desert SW. it’s sunny every day of the year. When the virus hit I was taking a multi vitamin and mineral. Heard about vitamin D so took 2500iu daily for about 4 mos and had a normal checkup
which included blood tests. My reading for D was 30. I was obviously deficient in D prior to supplementing and in the minimum range after having supplemented. Upped to 5000 right away. Recommend check it out.
We probably need both sunshine and the D via our daily food and supplements.