Food for the human body is all about having and extracting out the nutrients that we need in order to be at our best internally and physically. The definition of nutrient substances is food that the body can use to obtain energy synthesize tissues and regulate functions.
There are two main forms of nutrients that the body needs in order to function macronutrients and micronutrients.
Macronutrients are nutrients such as carbohydrates, fat, or protein that are needed in relatively large amounts in the body.
Micronutrients are needed as well, but these are nutrients such as vitamins and minerals that are needed in a relatively small amounts in our daily nutrition.
Water is a very important nutrient as well, and so important that we cannot live without it. Our body is nearly 60% water. Water is chemically the simplest nutrient out of all the nutrients. It has many roles in the body including temperature control, lubrication of joints, and transportation of nutrients and waste.
Both macros and micros are what makeup the caloric content of food “calories.”
Let's look at what a carbohydrate does to the body. Your body converts most dietary carbohydrates to glucose - a simple sugar compound. It is glucose that we find in our circulation that provides a source of energy for cells and tissue.
So basically, carbs are the major source of fuel for the body. Carbohydrates are the starches and sugars found in grains, vegetables, legumes (dried beans and peas), and fruits. We can also get carbohydrates from dairy products.
Now that's discuss proteins - which are made up of smaller cells called amino acids. The body produces its own form of amino acids, and when mixed with the amino acids, we get dietary proteins. They help to be able to maintain the body structure (i.e. muscle tissue) and regulate body processes.
Protein can also be used for an energy source as well. Protein can primarily be found in meat and dairy products which are among the most concentrated forms of protein. You can also find small traces of protein and grains, legumes, and vegetables.
Lipids, also known as fats and oils - or more correctly called triglycerides - are another major fuel source for the body.
Triglycerides, cholesterol, and phospholipids have other important functions, like providing structure of the body cells by carrying fat-soluble vitamins A, D, E, and K and also providing the starting material cholesterol for making many hormones.
We can find lipids in the fats and oils we cook with, and we can also find it in meats and dairy products. We find less quantities in plant sources such as coconut olives and avocado.