About 18 months ago I began donating 2 pints of red blood cells every 6 months. About the same time, I started experiencing RLS. Today I learned that I have a major iron deficiency, no doubt because of the blood donations, which is likely the underlying cause of my RLS. Specifically, they tested my Ferritin level, which was dramatically low. My neurologist has ordered me to start taking iron pills 3 times per day and will have my iron level retested in about a month. I was hoping they would tell me to have filet mignon each day, but pills was what they suggested.