If you’ve felt sluggish or have experienced a decline in training & racing performance, low iron levels may be the culprit.
1,000+ Athletes Helped
Symptoms of iron deficiency masquerade as everything from overtraining to poor sleep. Our simple quiz will help you…
If you’ve felt sluggish or have experienced a decline in training & racing performance, low iron levels may be the culprit.
1,000+ Athletes Helped
Symptoms of iron deficiency masquerade as everything from overtraining to poor sleep. Our simple quiz will help you…
If you’ve felt sluggish or have experienced a decline in training & racing performance, low iron levels may be the culprit.
1,000+ Athletes Helped
A process called foot strike hemolysis occurs in runners, especially those who run high mileage. Foot strike hemolysis is a process where red blood cells are damaged when the foot hits the ground, thus reducing your hemoglobin levels.
Iron is lost through sweating. While the amount of iron loss isn’t staggering, for a runner working out in hot and humid conditions, the losses can easily add up, especially compared to the general population.
Third, loss of iron through the GI tract (primarily the stomach or large intestine) is a problem for some athletes. Iron loss through the GI tract is fairly minor, but there may be a cumulative effect over months of running that leads to iron deficiency.
Finally, female runners have an especially difficult time maintaining proper iron levels since they also lose iron during menstruation
Of All Runners Being Iron Deficient
More Likely to Suffer from Low Iron Compared to Non-Runners.
Outside of training deficiencies, low iron is one of the most common reasons for poor results during workouts and races.
Red blood cells, which contain hemoglobin, transport oxygen to your working muscles when you run.
If you have low iron levels, you will generate fewer red blood cells and your hemoglobin levels will decline. Therefore, less oxygen will be transported to your muscles, and running performance will suffer.
Ferritin is an iron storage protein; your body uses it to hold on to iron atoms until they’re needed
New research has has indicated that low ferritin levels have a persistent, performance-inhibiting effect even when hemoglobin levels are normal.
In fact, researchers found that rowers with low ferritin and normal hemoglobin are as much as 21 seconds slower than the rowers with normal ferritin.

Iron deficiency has been shown in research to be directly responsible for increased levels of physical and mental fatigue from training.
This effect may be linked to an alteration of mitochondrial metabolism in the muscle that reduces physical capacity.