These are foods to add into your diet to boost the lymphatic system: * Nuts and seeds The essential healthy fats found in seeds like chia, nuts, olive oil, coconut oil, and avocado, play a role in fighting inflammation. They also strengthen our inner organs walls. * Adaptogenic herbs Goldenseal, Echinacea, and Astragalus are three herbsthat help alleviate inflammation and congestion of the lymph nodes and vessels.