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Iron overload: An animal study showed that melatonin decreased the effects of iron overload on bone and stem cell death.[ref] This makes sense because melatonin is a well-known iron chelator.[ref][ref] Related article: Building Up Iron Hemochromatosis Mutations Fertility: The ovaries and follicle cells contain high levels of melatonin

Although many people over 50 have low vitamin B12 levels, no public health policies recommend routine screenings for this vitamin, as doctors do for cholesterol or high blood sugar

McCahy PJ and Styles RA: Prolonged bladder distension: Experience in the treatment of detrusor overactivity and interstitial cystitis

doi: 10.3945/ajcn.110.004853