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}}</ref> Human milk should be the sole source of nutrition for the first six months, however the [[Canadian Paediatric Society]] (2013) and the [[American Academy of Pediatrics]] (2022) recommended supplementation with Vitamin D.<ref name="cps2013" /> <ref name="aap2022" /> Complementary foods are introduced at about six months of age, but breastfeeding should continue.<ref name="cps2013"/><ref name="aap2022"/> The [[WHO]] and [[UNICEF]] recommend recommend that children initiate breastfeeding within the first hour of birth and be exclusively breastfed for the first 6 months of life – meaning no other foods or liquids are provided, including water. Infants should be breastfed on demand – that is as often as the child wants, day and night. No bottles, teats or pacifiers should be used. From the age of 6 months, children should begin eating safe and adequate complementary foods while continuing to breastfeed for up to 2 years and beyond.<ref>{{REFweb |url=https://www.who.int/health-topics/breastfeeding#tab=tab_2 |title=Breastfeeding |publisher=[[WHO]] |accessdate=2022-12-08}}</ref>