I am still trying to get him to take Vitamin D and zinc though.
If one supplement has bad effects, he might be more reluctant in the future.
Milk and meat contain zinc. I think zinc supplements might irritate the intestine.
If he gets about 5 minutes of sunlight on his arms three days per week, he might have a good level of vitamin d.
For a long time, people in cold countries took 10 micrograms of vitamin d per day. If one takes it, I think that’s a good amount.
Thanks for your reply. We do make a point to get in the sun every day. We use this as a gauge but we are usually out longer than this http://health101.org/misc/Chart_UV_Index.jpg
He is on keto, tons of red meat, so he is probably is getting plenty of zinc
