Traditional thyroid testing is limited to TSH. TSH is the hormone produced in your brain that tells your thyroid to produce actual thyroid hormone, which is T4. T4 is still only about 20% of the active thyroid hormone, though; the other 80% is T3. Most of the T4 produced by [...]
Ferritin is the storage form of iron—or, more specifically, it is a protein that itself stores iron. More often I tend to see it low than high for a variety of common reasons--a situation that often leads to hair loss, among other things. But ferritin can also be abnormally high. The [...]
There are multiple levels of iron deficiency: low ferritin is the first, as ferritin is a storage form of iron. This can progress to low iron saturation in the bloodstream. Finally, it can become iron deficiency (or microcytic) anemia. The first two levels of iron deficiency can be caused by [...]
One of the most common causes of female hair loss is low ferritin. Here's why, and what you do about it.