nutrition

Nutrition deals with the metabolic pathways of the body and how they perform in repspect of your dietary intake. By extension, nutrition is concerned with the study of nutrients, those substances - excluding air - that we ingest.

The following substances are regarded as nutrients:

• water
• carbohydrates
• fats
• proteins
• fiber
• vitamins
• minerals

The last two, minerals and vitamins are regarded as micronutrients (needed in small amounts). The remainder are classed as macronutrients (needed in much larger quantities).