The forum’s strict diet is full of foods that can cleanse the lymphatic system along with the entire body. Some of the foods , etc. that work for the lymphatic system are flax seeds, ginger, kale, mustard greens, dandelion root, omega 3 fatty acids, nettle leaf tea, L-Arginine, and kelp. Including all of these in your daily meal plan would likely do a lot for your problem.
You should also add the major vitamins to your regimen; the usual, A, D, E, C, etc. as well as a mineral supplement.