Can melanoma cause iron and vitamin d deficiency?

Not typically: Melanoma can spread to the stomach or bowel and cause blood loss and decreased iron. Vitamin d is not usually impaired by melanoma.

Melanoma : Most melanomas will not cause iron or vit d deficiency. However if melanoma has metastasized to small bowel leading to some obstruction symptoms and malabsorption it can happen. Some of the intense melanoma therapies such as il2 or interferon or ipilimumab or zelboraf can cause similar problems if causing significant side effects.

Can cause Iron Def: If melanoma has traveled to the GI tract and has created tumor that is bleeding, it can lead to iron deficiency anemia. Melanoma does not cause vit d deficiency.