Microbial Imbalance in the Gut: Implications for Obesity and Malnutrition

The global rise in obesity and malnutrition, including nutrient-deficiency disorders, raises ethical concerns about current development priorities. Children under five are especially affected, with consequences such as impaired bone growth and disruptions in early brain development, including neurogenesis and synaptogenesis. Responses from both individuals and institutions have been limited. While health awareness is increasing, lifestyle-based efforts often overlook the structural issues of food insecurity and nutrient availability. Government strategies have not sufficiently addressed the need for sustainable nutrition systems. Providing food alone is inadequate; the focus should be on restoring essential nutrients and supporting balanced diets. Recent studies highlight the gut microbiota as a key factor in human nutrition. These microbial communities, located in the gastrointestinal tract, live in a symbiotic relationship with the host. They have evolved to support the digestion of complex nutrients and influence multiple physiological processes. Research on the gut-brain axis has shown that microbiota play a significant role in health regulation. This review examines the relationship between gut microbiota and human biology, analyzes the effects of microbial symbiosis, and reviews interventions designed to address nutrient imbalances. Based on current findings, gut microbiota-targeted therapies offer a viable and cost-effective approach to reducing the impact of obesity and malnutrition.