What causes yellowing of the whites of the eyes?

Oct 11, 2022 Source: Cainiu Health
Disease description:

When I woke up this morning, I noticed that my husband's whites of the eyes appeared slightly yellow. I'm not sure if he's sick, but I'd like to know what could be causing this condition.

Doctor's answer (1)
Dr. Cui Xin
Yellowing of the whites of the eyes may result from consuming foods high in carotene, such as carrots and pumpkins. It could also indicate abnormal liver metabolism—for example, significantly elevated bilirubin levels in the body can lead to generalized yellowing. Additionally, excessive fatigue or eye trauma may also cause this condition.