Food is any material eaten for the purpose to supply nutrition to an organism. In humans, food is generally of vegetable, animal, or fungi origin, and consists of necessary nutrients, including vitamins, carbohydrates, proteins, or iron. The nutrients in food are food essentials; they are needed in the process of living and may be categorized into three categories: dietary components, substances needed to maintain health, and substances required for development. All other components are referred to as non-food components.
Dietary components are found in foods and consist of vitamins, minerals, carbohydrates, fibre, fats, and herbs (antioxidants). A variety of foods are recommended for a daily diet in order to meet the requirements of the body. These components are included in the diet to help prevent illness, increase energy, reduce weight, improve mental state, improve the appearance of skin, aid in digestion, act as protection for the body from certain diseases, etc. The other categories of food that are included in the diet are included for the purpose of providing energy, to promote or retard the aging process, to improve brain function, to improve immune system, to promote or retard the growth of body tissues, etc. Fatty acids are another important category of food because they facilitate digestion and help prevent disorders in digestion such as irritable bowel syndrome.
Oils, fats and waxes are produced by plants for the purpose of preservation, growth, protection, etc., and are available in different forms such as sunflower oil, vegetable oils, cocoa butter, and animal fats, oils, waxes. Some of these oils, waxes and fats are considered saturated fats or bad fats, whereas others are considered unsaturated fatty acids (FA’s) or good fats. Foods with high levels of saturated fatty acids are characterized by increased LDL cholesterol levels, increased blood pressure, increased heart disease, decreased libido, etc. Foods with high levels of unsaturated fatty acids are characterized by lower LDL cholesterol levels, lower blood pressure, lower risk of heart disease, lower chances of cancer and lower levels of total body fat. Fats and oils can be used instead of butter or animal fats for cooking oils can also be used in place of butter.