Why are some babies born with hair?

Some babies are born with hair due to a combination of genetic and hormonal factors. During pregnancy, hormones like androgens can stimulate hair growth in the fetus, leading to the development of fine hair called lanugo, which often covers the baby's body. This hair typically falls out before or shortly after birth, as the baby's body prepares for life outside the womb. The amount of hair varies from baby to baby, influenced by individual genetics and environmental factors.