When do babies develop sweat glands?

According to "Parents" magazine, babies are born with sweat glands that begin to develop as soon as the baby is born. However, a major difference between the sweat glands of mature humans and infants is that infant sweat is not odorous.

"Parents" magazine explains that while infants have active sweat glands, the odor of sweat comes from the apocrine glands which do not activate until the body goes through puberty. "The Global Post" reports that infants and toddlers primarily sweat through odorless Eccrine glands, which then turn into apocrine glands when they go through puberty, producing sweat in much greater quantities.