Epidemiological studies and studies in animal models have demonstrated the importance of the early stages of life and their relationship with health and disease in adulthood. Intervening in the risk of adult diseases by acting early in life is possible due to the great plasticity of this period, when timely actions can have a great impact. These would be aimed at reducing risk factors which would help to break the intergenerational vicious circles of maternal and childhood obesity, diabetes and related cardiometabolic health consequences, with a potential impact on the next generation. Obesity in children and adolescents is a global health problem whose prevalence is increasing. When it comes to the risk of developing childhood obesity, the periods from conception and pregnancy through the end of the first 2 years of life are particularly relevant. Despite the special relevance of this stage, it has not always received the attention it deserves, and the approach at this time not free of difficulties. Due to their importance, each of these stages requires specific approaches. Education on the concept of the relevance of healthy lifestyles during this period should be delivered not only to health care personnel but also to the general population.
Keywords: Childhood; Infantil; Obesidad; Obesity; Origin; Orígenes; Riesgo; Risk.
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