Mamamia: Why do nipples get darker during pregnancy? A paediatrician shares the fascinating reason.

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…one of the weirder side effects of being ‘with child’ is getting darker nipples, a symptom which often happens at the very beginning of your pregnancy, and can affect both your actual nipple and the areola – or the pigmented area surrounding the nipple. This could also accompany other symptoms like sore, tender breasts, or an increase in breast size.

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