• Vitamin D deficiency is increasing and people with dark skin living in the Northern hemisphere are particularly affected.
• Deficiency is increasingly being linked to various diseases including breast cancer.
• A study has found that Black and Hispanic women who have adequate vitamin D levels are 21% less likely to develop breast cancer than those who are deficient.

Written by Hannah Flynn on May 3, 2022

Fact checked by Ferdinand Lali, Ph.D.

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