New mothers can improve their babies' health by breastfeeding after exercise, new research has revealed. Scientists have discovered that intense exercise increases the levels of a hormone in their milk that protects babies from diabetes and regulates their metabolism.

World Health Organization recommends breastfeeding during the first six months of life is that breastfed children are less likely to be overweight and obese than formula-fed children. New research shows that the composition of breast milk varies between mothers with a high and low body mass index, and that differences in the composition can play a role in the transmission of obesity from mother to child.