Metabolism is a term that is used in describing the many energy producing processes that happen in the body. These are the processes that are responsible for the conversion of food and other substances into energy and other byproducts of metabolism.
Metabolism is an important function that is needed in order for the body to get the energy it needs to perform such internal tasks like healing injuries, removing toxins from the body, repairing damage and to power the muscles and the organs of the body. In other words, any organism will die if they cannot metabolize food. Metabolism is crucial in aiding the digestive function and also in absorbing nutrients. Metabolism is affected by hydration, nutrition and in physical activity. These are important factors that affect metabolism and how it functions. If any one of these factors falter the body's metabolic rate will slow down. Weight loss and weight maintenance, thus, affects the body's metabolism.
Lowering the intake of calories and fats can be positive actions towards weight loss but it can also decrease metabolism. Because of this, the metabolic rate should be stimulated through other means like physical activity. It is discouraged for someone to skip their meals or to drastically reduce their intake of calories because the decreased metabolism will mean the body will burn less calories and fat. This will also result in the body storing more fat.
Metabolism is also the same body function that helps in breaking down the chemicals that is ingested or absorbed into the body like drugs. The body uses catabolic metabolism in order to break down the larger molecules into smaller ones that are more readily absorbed by the body.