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Baby formula should be tailored for boys and girls to reflect the differences in milk that mothers produce depending on their baby's sex, researchers say. Tests on mothers' milk in both monkeys and humans have showed that levels of fat, protein, vitamins, sugars, minerals and hormones vary enormously, but there is evidence that milk made for female and male babies is consistently different. The make-up of the milk has a direct impact on the child's growth, but also on his or her behaviour and temperament, which may last for the rest of their life. Scientists suspect that breast milk may be tailored by nature to meet the different growth needs of the sexes. The findings have led some researchers to suggest that baby formula should come in boy and girl formulations to match the differences seen in breast milk. But when mothers fed female babies, their milk was less fatty and had more calcium, probably to support the faster growth of their skeletons. Mothers produced more milk overall for females, and over the course of their breast feeding, they received the same amount of fat as the males. In another study, Hinde looked at levels of the stress hormone cortisol in mothers' milk and how they affected the babies' behaviour. The research builds on previous work in humans that found milk with higher concentrations of cortisol made baby girls more irritable and harder to calm down.
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Witch's milk or neonatal milk is milk secreted from the breasts of some newborn human infants of either sex. Witch's milk is more likely to be secreted by infants born at full term , and not by prematurely born infants. In folklore, witch's milk was believed to be a source of nourishment for witches' familiar spirits. In other cultures expressing milk from the infant's breasts is supposed to contribute to a good breast shape in adulthood. In some cultures, the tradition of removing the milk "milking" has been reported. This practice can prolong milk production and other problems cannot be ruled out. This medical sign article is a stub. You can help Wikipedia by expanding it. From Wikipedia, the free encyclopedia. Milk secreted from the breasts of some newborn human infants of either sex.