These are foods to add into your diet to boost the lymphatic system: * Water May not be a food item, but essential to life. Drink plenty of clean, purified water. Water keeps the lymph fluid hydrated and flowing smoothly. * Cranberry Cranberry is an amazing emulsifier of fat which means it helps break down excess fat for the lymphatic vessels to carry away. * Leafy greens That green nutrient has powerful cleansing properties and beneficial effects on the blood and thus on lymph fluid as well.