Do you know that until 6 weeks of age infant is using maternal melatonin which he gets from mum? Just around 4 weeks of age baby starts to produce his own melatonin. Production, if supported properly is boosting when baby is 6 weeks. Together with other factors, cortizol and melatonin are responsible for regulation of humans biological clock. Do you know how to support baby so that he recognizes day and night? Do you know how to support melatonin production?