I've brought up Ferritin over the years here and still find myself in a state of confusion over it....when I got my Ferritin to 64 (2010) I remember back then I was feeling better.....My Ferritin may be 30 or less now and I'm in more joint pain than ever!!!!!!! I've backed down from taking Iron as it's so confusing and so many opinions on it....so I just posted to the owner of a thyroid board which is also owned by Mary Shomon...here is what she came back with today: I posted a question on Ferritin confusion to the person who runs Mary Shomon's thyroid group and here is what she sent thru today: Ferritin is storage iron, what your body draws upon as needed. After menopause the body doesn't have to constantly replenish iron stores due to lack of periods but everybody needs iron. Men don't have periods and can get anemic too, showing low ferritin and iron levels. The recommended ferritin levels around around ***80-100***. Just adding iron rich foods to your diet can make a difference. How's your vitamin B12 level? B12 is necessary for iron absorption. If you choose to take a supplement, keep it 4+ hours away from thyroid meds, before or after. Iron is best absorbed with vitamin C but binds with calcium. Supplements are best taken with meals for better absorption. Fatigue and muscle aches can be caused by low ferritin, which is why we tell folks to check for anemia or borderline anemia. Symptoms of low iron are symptoms of low oxygen which are similar to hypo symptoms.