When Isaac Newton paraphrased the concept of Occam’s Razor, he did so by saying, ‘We are to admit no more causes of natural things than such as are both true and sufficient to explain their appearances.’ This was rule number one of Newton’s ‘rules of reasoning in natural philosophy’ in his Principia. So is it necessary to posit multiple aspects of diet and lifestyle—multiple causes—to explain the presence of these chronic diseases that associate with Western and urban lives, or will one suffice? Sugar, for example.