Another possible cause of sudden extreme fatigue is a vitamin or mineral deficiency. A lack of iron is the most serious since it results in a lack of red blood cells. Without proper iron levels, oxygen in the blood is depleted, as is the protein hemoglobin. The result is anemia, which includes symptoms like physical and mental fatigue, weakness, dizziness, and shortness of breath.
To combat low iron levels, your doctor may recommend iron supplements. Altering your diet to include iron-rich foods also normalizes iron levels. A medical professional will instruct you on the proper amounts to ensure you aren’t overdoing it.
Lacking vitamins B12 and D may cause serious fatigue issues. Vitamin B12 is associated with the production of red blood cells, and low levels could result in anemia. Like with low iron, oral supplements or dietary changes are required to replenish B12 in the body.
A lack of vitamin D decreases bone and muscle strength. Luckily, you can get vitamin D from sunlight by spending 10 to 15 minutes outside each day. Ingesting some fish types, milk, breakfast cereals, and orange juice or adding supplements to your diet is also recommended.