Learned, dapper and with a bowel to set your watch by, healthy-eating prophet Dr Allinson was over a century ahead of his time and a self-proclaimed authority on everything from farting to skinny dipping. Here’s his vital advice on kids’ salt intake. On salt: "Civilised man has accustomed himself to eating salt, but he is no better for doing so. Fruits, grains, and vegetables contain all the salt necessary for our systems. If we add more, we err and do ourselves an injury. And do not force children to take it, nor tell them it is necessary."