Some causes for yellow hands can be medical conditions such as jaundice and hypercarotenemia. Jaundice is a condition in which the skin turns yellow due to an increase of bilirubin in the body, states the National Institutes of Health's MedlinePlus. Hypercarotenemia is the result of a diet that contains an excessive amount of carotene.
Jaundice, which affects the whites of the eye and skin, is a symptom that is associated with liver or gallbladder issues. It can also be related to diseases, such as pancreatic cancer or a blood disorder, notes Healthline.
Hypercarotenemia can happen when carotene-rich foods, such as carrots, are eaten in large quantities. The sclera, soles and palms are the body parts that usually turn either yellow or orange. The condition can develop when more than 20 milligrams of carotene is consumed per day for an extended period of time, states Columbia Health.