First 2,200 days of life as a window of opportunity for multidisciplinary action regarding the developmental origin of health and disease: positioning of the Brazilian Association of Nutrology

Introduction: From the beginning of the 21st century, a new concept began to emerge in scientific and social circles: the first 1,000 days of life. Along the same lines, an international movement started in the same period began to discuss the “developmental origin of health and disease”. Numerous problems that affect human beings throughout their life cycle begin in the early years and often can be avoided or minimized when early recognized and addressed. This document discusses, based on the scientific literature, the idea of expanding the window of opportunity for 2,200 days, encompassing the preconception phase to the end of the fifth year of life. Methods: Scientific articles published up to 2022 in Pubmed/Medline, SciELO, Google Scholar, and Lilacs databases, in Portuguese, English, and Spanish, were reviewed in an integrative manner. The search for articles was directed to topics related to intervention targets that could impact the present and future health of the child. Results: Biological, social and psychological aspects were studied in five phases: preconception, gestational, first year, second year, and third to the fifth year of life. The data obtained show the importance of expanding the period of greater professional attention at the beginning of life. Conclusion: The Brazilian Association of Nutrology recommends a window of 2,200 days (100 days in preconception + 270 days of gestation + 1,830 days from the first to the fifth year of life) as the ideal period of professional activity to guarantee present and children's future