What are the implications of vitamin D deficiency across different populations?
Vitamin D deficiency affects various populations differently due to factors like latitude, season, and skin pigmentation. For instance, individuals living at higher latitudes experience prolonged periods without adequate UVB radiation, while those with darker skin require longer sun exposure for sufficient synthesis, contributing to higher deficiency rates in certain demographics.
✦
This is one answer. The complete system — the psychology, the biology, and the method — is in the book.
Read The Willpower Lie →Found an error? Let me know →