This text begins with an in-depth overview into the human organism at the molecular, cellular, tissue and organ levels, and develops into a discussion of the objectives and features of organ systems of the evolved human. The book also covers the relationship between the human body and the environment in which it exists including other organisms that co-habitate the environment. Discussions of the nature of other organisms such as various animals, plants, and micro-organisms makes later information about food science, nutrient density in various food sources, and nutraceuticals easier to...