some times my nipples turn black why is that?

Answer 1

What is your nationality? Depending on your pigmentation on that and fluctuation of hormones throughout the month that does it itself. Our hormones change through out the month and can change the color or our nipples. The more darker the skin is the more it can be noticed. It is sort of like the line women get when they are pregnant, the line that runs from the belly button to the bubic area that gets darker during the pregnancy.

Just hormones that's all. :)

Answer 2

Hi, I have no idea as I have never heard of this happening before. You should go to the doctor to get checked out just to be on the safe side, good luck.