There are basic wellness-based principles of nutrition I was taught in chiropractic school more than 30 years ago and provide a much better understanding of the topic. A diet based on these principles avoids the constantly shifting advice of “first it’s good for you, then it isn’t.”The first principle of nutrition is simple: Foods are healthiest in their natural state. Put another way, the more you process a food, the more you reduce its nutritional value. If a food is highly processed, it will become harmful. Think of sugar, which is vital to our bodies in its natural form and is present in many foods. But when it is processed and highly purified, it becomes toxic, leading to diabetes, obesity and many other health problems.Remember hydrogenated fats? The medical profession used to recommend them as a “heart healthy” fat.