Could sunscreen cause a vitamin d deficiency?

Great question: . Although this is not commonly discussed, vitamin d deficiency is increasingly more common and may bec related to avoidance of sun exposure altogether. Sun exposure in moderation.
Great Question. It is unlikely since everything from milk to cereal is supplemented with vit d. I just wanted to complement you on thinking of a great question. In fact, uvb causes the transformation of cholesterol to vit d3. Sunblock of spf 8 decreases formation of d3 by 95% and spf 15 by 98%.