Hippocrates, the father of western medicine, once said that “Let food be thy medicine, and let medicine be thy food” which stressed the importance of nutrition in preventing and curing of diseases. Put simply – you become what you eat. Before the advent of industrial agriculture and food processing, people ate staples such as grains, fruits and vegetables that were grown and preserved naturally, and meat from animals that lived and grazed freely. Today, those foods come from a multi-billion dollar supply chain which uses modern interventions such as chemical fertilisers and pesticides that are harmful to health. Although high...