This paper explores the critical health impact of flood-related malnutrition, contending that it poses a significant concern due to its pervasive influence on the global population and enduring consequences across the life course. The analysis delves into the intricate disease pathways forged by malnutrition, emphasizing its role in elevating susceptibility to waterborne and vector- borne diseases. Through this investigation, the understanding of the interconnected nature of malnutrition and its intricate relationship with adverse health outcomes is strengthened, particularly in the context of climate change, environmental justice, and health. This research sheds light on the resilience of indigenous and coastal communities, showcasing their ability to mitigate the effects of flood-related malnutrition through alternative livelihoods.