InÂ nutrition,Â dietÂ is the sum of food consumed by a person or otherÂ organism.Â Dietary habitsÂ are the habitual decisions an individual or culture makes when choosing what foods to eat. With the wordÂ diet, it is often implied the use of specific intake of nutrition for health orÂ weight-managementÂ reasons. Although humans areÂ omnivores, each culture and each person holds some food preferences or some food taboos, due to personal tastes or ethical reasons. Individual dietary choices may be more or less healthy. Proper nutrition requires the proper ingestion and absorption ofÂ vitamins,Â minerals, andÂ food energyÂ in the form of carbohydrates, proteins, andÂ fats. Dietary habits and choices play a significant role in healthÂ andÂ mortalityÂ and can also define cultures and play a role inÂ religion. TheÂ dietÂ of an organism is what it eats, which is largely determined by the perceived palatability of foods.Â DietitiansÂ areÂ health professionals who specialize inÂ human nutrition, meal planning, economics, and preparation. They are trained to provide safe, evidence-based dietary advice and management to individuals, as well as to institutions. ClinicalÂ nutritionistsÂ are health professionals who focus more specifically on the role of nutrition in chronic disease, including possible prevention or remediation by addressing nutritional deficiencies before resorting to drugs. The book will be of use to the students, researchers and general readers of this subject.