Medical Causes of Yellow Eyes

7. B12 Deficiency

Vitamin B12, which mainly comes from animal sources, keeps nerves and blood cells healthy. Many people who avoid animal products are at increased risk of deficiency in the nutrient. Young blood cells in the bone marrow die prematurely, resulting in the production of larger but fewer red blood cells. Due to the high rate of premature damage of the red blood cells, serum bilirubin increases. Vitamin B12 deficiency is a very rare cause of jaundice. The deficiency can be treated with vitamin B12 supplements, overseen by a doctor.