Insurance is a female friend to prevent vaginal gynecological key. If there are really not the best to the regular hospital for examination, diagnosis and treatment. Like private parts with the sex organs, hormones will be affected, it is more likely black, in fact, this is a very normal phenomenon, and personal fitness and do not have to worry about.
First, breast Everyone thinks pink is very cute, but that is not mature enough pink, the color black halo is the mature woman. So that you are a black nipples mature woman has! Only to sexual maturity, the nipple will become a color dark halo, this is because the breast provides the nutrition depends entirely on sex hormone, if there
Had been sexual experience of women, the nipple also have such changes. Because the sex will promote sexy and strengthen the activities of the pituitary gland and then secreted by the anterior pituitary hormone stimulation in many, in fact, not only the anterior pituitary gland, and even the midstimulation hormone also secreted melanin so that the color black nipple, this