This cabbage lo mein is an extremely low calorie, flavorful meal that provides the immune system protection of onions, the metabolism-boosting power of garlic and black pepper and the brain-enhancing qualities of cabbage. For an even healthier version of this dish, substitute the spaghetti for a whole grain version, or even use vitamin C-packed spaghetti squash. Regularly substituting processed foods with fresh fruits, vegetables and whole grains is a great step in improving your overall health.