General Classifications For Food : Protein, Fat, And Carbohydrate

1456 Words Dec 31st, 2015 6 Pages
There are 3 general classifications for food: protein, fat, and carbohydrate. This article is about protein. We 'll talk about what it is, why you need it, how to get it, and how much you need in order to be healthy.

Why We Need Protein
Before we get into the details of what protein is, let 's get motivated by appreciating what protein does. Our bodies use protein to build just about everything. Skin, hair, muscles, organs, even the hemoglobin in your blood is made of protein. And the list goes on: The enzymes that break down food and spark chemical reactions in the body are proteins. Our immune systems depend on protein to make antibodies. Protein molecules aid the transfer of messages between the neurotransmitters in our brains. And many hormones, including insulin and other metabolism regulating hormones, are proteins as well.
I bet you 're thinking where 's the protein? Let me at it.

But before we go there, we should sneak in a little bit of science about what protein actually is. Protein molecules are made of smaller molecules called amino acids. There are twenty naturally occurring amino acids. Some names you might be familiar with are lysine, glutamine, and tryptophan. When you eat foods that contain protein, your body breaks those proteins down and reassembles the the amino acids to create the protein structures it wants to make.

The human body can synthesize eleven of the amino acids it needs. However, nine amino acids are called essential amino acids…
Open Document