10 Signs That Your Kidneys Aren’t Working Properly

9. Headaches, fatigue and general weakness.

Healthy kidneys convert vitamin D in our bodies to maintain strong bones and to produce a hormone called erythropoietin (EPO). This hormone plays an important role in the production of red blood cells. When the kidneys don’t work properly, they produce less EPO. The decrease in red blood cells (which carry oxygen) causes rapid muscle and brain fatigue.

Caution: It is common for individuals with chronic kidney disease to develop anemia. Anemia can begin to develop when someone has their kidney system functioning normally at 20-50%. If you are tired and getting enough sleep but still feel tired, have low energy levels and feel weak in general, you should see your doctor without delay.