Why do some women have dark areolas?

My girlfriend mainly has big nipples. It is one centimeter wide and the areola is very dark. But she is only 19 years old, why are her nipples so big? When protruding, they are about the size of my little finger, and they are dark in color, with a few cracks on them.

There is a large light black circle around the nipple, which is not very firm, like after giving birth, and similar to the ones in porn movies. She said she was a virgin and she would give me her virginity after we got married. Doctor, please help me answer this question.

The doctor replied: Just like skin color, the color of nipples and pubic area is determined by genetics, and the depth of the color has basically nothing to do with frequent sexual intercourse.

Some people's nipples are pink, some are brown, and after giving birth, the hormones in women's bodies cause endocrine changes, which can cause the color of the nipples and areolas to deepen and expand. But there are also women with fair skin who have given birth several times, and even in old age their nipples are still pink. Are they still virgins? As for the color of the labia, it varies from person to person. Most women who have not given birth have bright red colors, while those who have not given birth have dark wine red or amber colors. However, when sexually stimulated, their colors turn dark purple due to congestion. There is no problem with this situation either. This is because there are individual differences.