male, 27 y.o, 1,95m, 95kg

Upper lip suffered depigmentation process. The area afected is the up-central part and all the bottom part. The colour is not pink-red like before, it has the same colour like the rest of my face- (brown)white.

I expose my skin to sun very often because I m doing sport almost every day in open space... but I never had this problem.

Can it be from the food?

Thank you