The pandemics of obesity, undernutrition, and climate change represent severe threats to child health. They co-occur; interact with each other to produce sequelae at biological, psychological, or social levels; and share common underlying drivers. In this paper, we review the key issues concerning child diet and nutritional status, focusing on the interactions with climate and food systems. Inadequate infant and young child feeding practices, food insecurity, poverty, and limited access to health services are the leading causes of malnutrition across generations. Food system industrialization and globalization lead to a double burden of malnutrition, whereby undernutrition (i.e., stunting, wasting, and deficiencies in micronutrients) coexists with overweight and obesity, as well as to harmful effects on climate. Climate change and the COVID-19 pandemic are worsening child malnutrition, impacting the main underlying causes (i.e., household food security, dietary diversity, nutrient quality, and access to maternal and child health), as well as the social, economic, and political factors determining food security and nutrition (livelihoods, income, infrastructure resources, and political context). Existing interventions have the potential to be further scaled-up to concurrently address undernutrition, overnutrition, and climate change by cross-cutting education, agriculture, food systems, and social safety nets. Several stakeholders must work co-operatively to improve global sustainable nutrition.

Early childhood feeding practices are fundamental for a child’s healthy growth, development and potential

Obese children are at high risk of developing vitamin D deficiency. Omega-3 polyunsaturated fatty acids and their derivatives might have a beneficial effect on vitamin D status of obese children, due to their anti-inflammatory action, and increasing its absorption. This multicenter, randomized, double-blind controlled study aims to investigate the effect of vitamin D and docosahexaenoic acid (DHA) co-supplementation for six months on vitamin D status, body composition, and metabolic markers of obese children with vitamin D deficiency. A total of 108 children were enrolled and 73 children completed the study: 33 were supplemented with an oral dose of 500 mg of DHA and 1200 IU/day of vitamin D3 and 41 were supplemented with 1200 IU/day of vitamin D3 + wheat germ oil. At the end of the study, more than 50% of the subjects improved their vitamin D status. However, co-supplementation was not more effective than vitamin D plus wheat germ oil. Fat mass percentage was significantly reduced, and body mass index improved in both groups, even if all the subjects were still obese at the end of the study. Children receiving both vitamin D and DHA presented a higher increase of DHA levels that could be relevant to prevent inflammatory-associated complications of obesity, but they had no effect on vitamin D levels.

Micronutrient deficiencies during pregnancy pose important challenges for public‐health, given the potential adverse outcomes not only during pregnancy but across the life‐course. Provision of iron‐folic acid (IFA) supplements is the strategy most commonly practiced and recommended globally. How to successfully implement IFA and multiple micronutrient supplementation interventions among pregnant women and to achieve sustainable/permanent solutions to prenatal micronutrient deficiencies remain unresolved issues in many countries. This paper aims to analyse available experiences of prenatal IFA and multiple micronutrient interventions to distil learning for their effective planning and large‐scale implementation. Relevant articles and programme‐documentation were comprehensively identified from electronic databases, websites of major‐agencies and through hand‐searching of relevant documents. Retrieved documents were screened and potentially relevant reports were critically examined by the authors with the aim of identifying a set of case studies reflecting regional variation, a mix of implementation successes and failures, and a mix of programmes and large‐scale experimental studies. Information on implementation, coverage, compliance, and impact was extracted from reports of large‐scale interventions in Central America, Southeast Asia, South Asia, and Sub‐Saharan Africa. The WHO/CDC Logic‐Model for Micronutrient Interventions in Public Health was used as an organizing framework for analysing and presenting the evidence. Our findings suggest that to successfully implement supplementation interventions and achieve sustainable‐permanent solutions efforts must focus on factors and processes related to quality, cost‐effectiveness, coverage, utilization, demand, outcomes, impacts, and sustainability of programmes including strategic analysis, management, collaborations to pilot a project, and careful monitoring, midcourse corrections, supervision and logistical‐support to gradually scaling it up.

This narrative review explores key issues surrounding climate change and diets, highlighting individual-level dynamics and structural constraints to implementing policies that prioritize sustainability through a political economy lens. Strong interconnections exist between climate change and agri-food systems. Current eating patterns are unsustainable, threatening both human and planetary health. Hence, the urgency of promoting “Planetary Health Diets.” Available evidence confirms that the healthiest diets exert the least pressure on the environment. Partially substituting meat with plant-based alternatives and reducing the intake of ultra-processed foods can contribute to more climate-friendly dietary patterns. Environmental issues, eco-emotions, health-related dietary motivations, and ethical aspects likely encourage consumers to adopt more sustainable eating habits. In contrast, high prices, consumers’ low acceptance, low education, lack of a standardized definition, and weakness in the current information-based instruments related to sustainable food production pose significant challenges to consumers’ choices. Effective governance at global, national, and local levels is pivotal. Integrating sustainability issues in national food-based dietary guidelines, education and awareness campaigns, along with reforming public food procurement and offering economic incentives for sustainable foods have the potential to foster the transition towards a healthy sustainable eating. Current dietary patterns negatively affect both planetary and human health. However, consumers are increasingly inclined toward sustainable food options. While individuals play a role in food choices, structural interventions are essential to ensuring a successful transition.