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?

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Iron deficiency is the most common nutritional deficiency in the world, with up to 20% of menstruating women lacking in the ...

Why ferritin matters: Ferritin stores and releases iron, fueling red blood cell production and oxygen delivery throughout the body. Low vs. high signs: Low levels can cause fatigue, dizziness, and ...

Ferritin, your body’s iron storage protein, can reveal a lot about your health. Low levels may point to iron deficiency, while high levels can signal overload or inflammation. Understanding your ...

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 ...

Increased ferritin levels were associated with increased inflammation in patients with peripheral arterial disease, according to results from an analysis. FEAST studied the relationship between iron ...

Women with polycystic ovary syndrome (PCOS) tend to have higher average ferritin levels compared to control subjects, but this does not seem to have a significant impact on their fertility or ...

Are high body iron stores associated with an increased risk of type 2 diabetes mellitus? Researchers from Germany suggest such an association exists, but in this population-based study, most ...

Dear Dr. Roach: What's the best advice when one doctor seems more concerned about something than another? I am a 49-year-old woman who doesn't smoke, is relatively healthy and who weighs about 150 ...