Excess fat tissue (especially visceral fat) releases inflammatory cytokines (like IL-6 and TNF-α). Chronic, low-grade inflammation can impair neurotransmitter function, especially dopamine, GABA, and glutamate — all heavily involved in speech motor regulation. When weight is lost, inflammation drops, leading to cleaner, faster neural communication and better speech timing and coordination. Less inflammation = smoother signal flow between the basal ganglia, motor cortex, and speech muscles. It’s important to ingest HEALTHY fats as part your diet though as it improves brain neuronal health.