What happens in the gut does not stay in the gut. Instead, gut-derived signals, nutrients, microbes, toxins and immune messengers travel through the mesenteric lymphatics - the specialised lymph vessels that drain the intestines - to influence whole-body health. The Gut–Lymph Axis is now recognised as a major pathway for the regulation of inflammation, immune responses, metabolic health and even weight. This post highlights why the lymphatic system is essential for immunity a