Document Type : Letter to Editor



Folate plays an important role in metabolism and its deficiency can lead to cardiovascular problems or carcinogenesis. Some studies show that narrow band UVB (NBUVB) causes folate deficiency by photolysis , while others have different opinions or even the contrary. With regard to paradoxes in this context, we decided to study the effect of NBUVB on folate levels in patients with dermatologic disorders.