The signs of weak kidneys are, “white or colorless urine and pain, weakness of the body, loss of virility, backache and headache.” The remedy is, “by diet consisting of large amounts of pure water, kidney meats, parsley, leafy green vegetables, wheat germ, and fresh green peas. Avoid coffee … and other stimulants.”
Robert Thomson, in “Natural Medicine” (Wildwood House, London, 1981)