Early cow's milk consumption: a neglected factor in pediatric type 1 diabetes in sub-Saharan Africa

Type 1 diabetes (T1D), an insulin-dependent autoimmune disease, is silently progressing in sub-Saharan Africa but remains underrecognized and often diagnosed too late. Reported incidence rates (0.4-1.5 cases per 100 000 children per year) are likely underestimated due to the lack of national registries and high mortality resulting from limited access to insulin. Over 50% of children diagnosed with T1D in Nigeria, for example, die within 5 years. While international studies, such as the TRIGR study, have suggested an association between early cow's milk exposure and pancreatic autoimmunity, this environmental risk factor remains largely unstudied in African contexts. Early cow's milk introduction is common in sub-Saharan Africa due to socioeconomic pressures, maternal workload, and low exclusive breastfeeding rates, exposing infants to potential autoimmune triggers during a period of gut immaturity. Despite the growing burden of noncommunicable diseases, no national health policy in the region addresses this nutritional risk. This article calls for increased awareness, targeted research, and cost-effective preventive strategies including promotion of exclusive breastfeeding for 6 months, delayed introduction of cow's milk, and health education. Addressing this gap is urgent to reduce preventable T1D-related morbidity and mortality in vulnerable populations across sub-Saharan Africa.