Some find that their nipples become more sensitive. Moderate changes are normal, but for instance, if nipple sensitivity reaches the painful level, estrogen dominance is indicated. Perhaps your body is not processing estrogen properly. Once you are familiar with your breasts, examine them once a month, sometime between ovulation and the beginning of menstruation. This will dispel many fears you may have.
Fear is the opposite of what is needed to create and maintain health.
In much the same way, you are what you think. You have ultimate control over most factors associated with how long and how well you'll live. One of the first things you can do is reach for cruciferous vegetables -broccoli, kale, cabbage, brussel sprouts. Next, reach for soy products. Soy is a phyto-estrogen that actually binds to estrogen receptor sites, thus preventing carcinogenic estrogen from entering cells.