Iron and vitamin D are two of the most common nutrient deficiencies worldwide, and they are connected.
Low vitamin D levels can make it harder for the body to restore healthy iron levels. Vitamin D helps support the production of red blood cells and helps the body make more iron available.
The relationship also works the other way around. Long term iron deficiency may affect the body’s ability to absorb vitamin D, creating a cycle in which both deficiencies can become more difficult to correct.