I have trouble with my right hand kidney. My neighbour, Roger, has trouble with his left hand kidney. I can only eat yang and neutral foods (according to Traditional Chinese Medicine): so no cheese or other ferments, no spinach, rhubarb, parsley nor beetroot, but plenty of hot and spicy stews, meat. Roger can only really eat yin and neutral foods. Basically, everything which is bad for me is good for him and vice versa. Very handy as we live next doors: anything wrong, we just toss it over the fence, as it were. I have to urinate very soon after drinking. For Roger, it takes ages before he has to go. I looked it up, and indeed, the left and right kidney work quite differently. Why do we never hear about this in ‘straight’ medicine? Why are kidney diets one size fits all?