The study of the requirement of the essential nutrients in food for the maintenance of human health is dealt under the science of human nutrition. A good and balanced diet promotes human biological development. The major classes of nutrients are macronutrients and micronutrients. Fats, proteins and carbohydrates are macronutrients. They provide structural material and energy. Vitamins and minerals are needed in small amounts and called micronutrients. Some essential dietary minerals are magnesium, phosphorus, calcium, chlorine, potassium, etc. This book provides comprehensive insights into the area of human nutrition. It aims to shed light on some of the unexplored aspects of this field. For someone with an interest and eye for detail, this book covers the most significant topics in this discipline.