A mysterious deficiency that evaded more natural remedies changed her long-standing view that food could fix everything, reports Shape.

One night, I woke up at 4 a.m. with this terrible achy feeling in my legs, like something was crawling on my skin. I got up and tried to walk it out and then went back to bed. When it happened the next night and the next, I thought I was going crazy. “Is restless leg syndrome really a thing that a 34-year-old woman can get?” I thought. Turns out, it is a thing, and particularly a thing if you have iron deficiency, and boy, is it terrible.