03/27/2026
If you've been taking iron for months and still feel exhausted, there's probably a reason.
Your body has a hormone called hepcidin that controls how much iron gets absorbed. When vitamin D is low, hepcidin rises and blocks iron from being absorbed, even when you're supplementing consistently. So the iron is there, your body just isn't taking it in.
This is why iron deficiency and vitamin D deficiency show up together so often. It's also common for women to have both deficiencies together, partly because menstruation already depletes iron regularly, and low vitamin D makes absorbing it back even harder.
If you're only addressing iron, it's worth getting your vitamin D tested too. And if you're low in both, taking vitamin D at the same time may help your iron supplement work better.
Were you ever told to take both together?
👉🏼 Follow for supplement information you don't hear about elsewhere
____
The information provided in this post is for informational purposes only and is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition or before starting any new supplement regimen. Never disregard professional medical advice or delay in seeking it because of something you have read on this platform.