Sometimes, health can be distilled down to some simple ideas. Here is one: If you cannot deliver oxygen to your tissues, you cannot enjoy good health.
There are several types of anemias, and they all result in the inability of your red blood cells to carry oxygen to your tissues.
Fatigue is usually one of main results of the anemias. This makes sense because oxygen is a critical component of energy production in your cells. Lowered oxygen is lowered energy production and reduced healing.
It is really hard to enjoy life if you are tired all the time.