Its because your body will be using all its iron reserves focusing on regrowth of calcium to repair what doesnt need repairing as is big factor of AS

since adolescences i have struggled with the same issues ~ the only time my “numbers” are normal is with infusion or injection
i eat well and take supplements but without much success
best to you!!

Hi @A MySpondylitisTeam Member, ditto, I am low on my iron by blood tests. I take Calcium with D in it for Osteoporosis. If you take Iron pills you should take it with Vit C, and take it 20 minutes before other meds. Vit C increases the iron absorption; other meds inhibit the effectiveness of iron supplements. Fatigue is a symptom of iron deficiency. Whether our bodies absorb anything depends on the bacteria in the stomach and what you put in your stomach, food and beverage, at any give time. A gastroenterologist is best to follow you for anemia. I am a big believer in pre and probiotics to get the stomach right.

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Take Vitamin D3. Everyone with inflammatory disease has a deficiency. I take 1000 mg. a day. If you are worried- get it tested. Vitamin D deficiency causes all kinds of problems. Check your B 12 as well. You are probably fine with iron- the B 12 is what you need. When in doubt- check it out.

I am also on many supplements, except iron. But do you take proton pmp inhibitors, like Prilosec? My nutrients were being blocked and washed out of my system by Prilosec. I take Zantac which doens’t help as well but my nutrients are improved. I will always be on Vitamin D, calcium,. Magnesium, etc...