A fifth (20%) of menstruating women have an iron deficiency. (Getty Images) Iron deficiency is the most common nutritional deficiency in the world, with up to 20% of menstruating women lacking in the ...

Ferritin is a protein that’s produced in the body’s cells, and largely concentrated in the liver and immune system cells. Ferritin stores and releases iron, which is essential for producing red blood ...

Running can feel exhausting, but it shouldn't leave you so gassed you can't get off the couch for the rest of the day or that it takes you a full week to recover from a workout. Too often, that sense ...

Everyday Health: Leland Metheny, associate professor at the School of Medicine, explained how there may be other reasons your ferritin test results may be abnormal. "Ferritin levels should be ...

For me, running with low iron levels was a progressively worsening slog. For years, I attributed relatively vague symptoms – mostly fatigue and heavy legs – to common training mistakes, like improper ...

Do you sweat a lot? Do you run several times a week, play tennis for hours, ride road bikes long distances? And lately have you noticed your performance dropping off? A lack of motivation? Low energy?

Serum ferritin levels seem to be a big topic with runners of both my age (40s) and with the high school XC team in my area. A lot of runners are getting their ferritin levels checked and finding that ...