Good hydrations: Does milk make healthy brains and bones?

 作者:雷瘿郎     |      日期:2019-03-03 08:06:03
Plainpicture By Tiffany O’Callaghan Milk is a richly nutritious mixture of water, proteins, minerals, vitamins, sugars, saturated fat and cholesterol. All mammals make it, but humans are the only ones to drink it beyond their early years. Should we? Breast milk – or synthetic versions of it – provides the “perfect balance of nutrients” for babies in their first year, says Andy Bernstein, a paediatrician at Northwestern University in Evanston, Illinois. After that, full-fat cow’s milk is recommended as a good source of fat for brain development, dropping to 1 or 2 per cent fat milk from age 2. But although programmes in the US and UK that gave milk to children in schools were associated with huge health benefits, it is not clear why. “We don’t know if there is something specific or special about milk, or if it is just the fact that these children are getting more calories, protein, nutrients in general,” says Andrea Wiley of the University of Indiana at Bloomington. A recent study of children in Kenya found that supplemental milk helped those with stunted growth catch up in height, but provided no benefits over a non-milk nutritional supplement for children developing normally. For adults, the benefits seem even more dubious. There is no conclusive evidence, for example,