Phase III Phase III is much more relaxed, and allows you a wide variety of foods. It is less a diet and more a long-term eating strategy, encouraging you to be conscious of foods that promote or fight your specific type of fluid retention and to eat accordingly. Occasional items are banned, but Phase III is mostly about encouraging a balance of 90 per cent beneficial foods, and 10 per cent free choice. Drinking less fluid will not cure fluid retention, and could make it worse. Tea, coffee and alcohol are the worst drinks for fluid retention sufferers.
Plain water is the best.
If you have been given a special diet by a hospital dietician and told that it could be dangerous for you to deviate from that diet, then you should ask your dietician's advice before considering the Waterfall Diet.