Nutrition is the process through which an organism uses food as fuel to support its normal functioning. It involves absorption, assimilation, metabolism, biosynthesis and excretion. The use of nutrition refers to the regulation of food consumption, the control of nutrient partitioning in cellular metabolism, and regulation of nutricosmetics. Nutritional needs of an individual vary from one person to another. Food nutrition is a complete system that includes processing, preparation, digestion, absorption and disposal of nutrients. There are five major classes of nutrients including protein, carbohydrate, fat, mineral and vitamins. There are also several groups of nutrients, which include amino acids, vitamins, minerals and carbohydrates. Some of the commonly used food components are vitamins, minerals, fats, carbohydrates, and enzymes. The primary nutrition is received from the five groups of macronutrients or building blocks. These include proteins, carbohydrates, vegetables and fruits. The types of food that provide all the basic building blocks are vegetables, fruits, and grains. Some of the commonly used foods include milk, eggs, fish, meat, poultry, beans, and lentils. A balanced diet is the key to get all the nutrients required for healthy living. It is important to consume the right amount of vitamins and minerals. Generally, an average healthy man should eat about 2.25 pounds of protein per day and the same for women. Protein helps in proper growth of children as well as maintaining the bodyҳ muscles. Thus it becomes essential for people to follow good nutrition. Every human being needs to consume the right amount of food for their daily food needs. In order to meet the requirements, an individual has to take food that contains vitamins, minerals, carbohydrates, and proteins. The diet that best meets these requirements is called the 3-meal-day or the 3-meal-per-day diet. The best food items that fit into this diet are legumes such as beans, whole grain cereals, whole wheat breads, and low fat dairy products. Whole grain cereals, white breads, and other cereals are made possible through a process called transfatting. This process removes the dietary fiber, which makes it easier to digest and absorb. Similarly, fruits and vegetables, which contain less fiber are also made possible by transfatting. The fiber content in vegetables is lost during cooking or processing. There are different approaches that are used to teach about human nutrition. Some people consider it to be animal nutrition while others believe it to be plant nutrition. There are several differences between the two kinds of nutrition. Animal nutrition basically refers to feeding on animal material. Plant nutrition on the other hand involves eating foods that are made from plants. One of the most common examples of plant food is food made from starch. Carbohydrate foods include rice, pasta, potatoes, bread, cereals, and many other grains. These food items are essential in providing energy for the body. However, the right amount of carbohydrates, protein, and minerals are crucial in building the perfect human body. Carbohydrates provide energy for the body. They are found in many foods such as potatoes, cereals, and bread. These food items are great sources of carbohydrates since they can easily be digested by the body. Thus, there is no need to worry about excess carbohydrates in the diet since they are broken down into simple sugars that can be absorbed by the body tissues. Protein and fat are the next building blocks in nutrition. Many people may feel that fats should be removed from the diet because they can cause cholesterol levels to go up. However, there are good fats that provide healthy benefits. Examples of fat-soluble nutrients are omega 3 fatty acids, which are found in fish oil supplements. The next group of nutrients include vitamins. Examples of vitamins are carbohydrates, proteins, and fats. Carbs are the main source of energy in our diets. Proteins are the building blocks of muscle tissue while fats are used as a source of energy. In addition, vitamins provide our bodies with the necessary elements for the maintenance of a healthy body. Nutrition is important to everyone. It does not matter what you want to eat. If you want to eat healthy and get the right amount of nutrients from your foods, you can do this just by following a few guidelines.