11 Oct 2013
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Protein provides the building blocks necessary for the body to build and repair tissue such as muscle, hair, skin and nails. It also helps in the maintaining of brain cells.
It is estimated that about half of the human body’s dry weight is made up of protein. Many of the foods we eat contain protein, particularly flesh foods (chicken, beef, lamb and fish) and legumes like beans and lentils.
Protein is digested to release amino acids. A protein can be made up of numerous amino acids but the two main classes of amino acids are non essential amino acids, those that can be made by the human body and essential amino acids, those that can be supplied only through the foods we eat. In the body the amino acids are used to make new proteins, converted into hormones such as adrenalin or used as an energy source.
When it comes to energy production, protein is commonly used as a last resort as an energy source. Once the bodies glycogen stores are depleted that's when you're most likely to rely on protein to power your through.
While Australian's consume more than enough dietary protein, the human body can’t store protein, so it must be supplied on a daily basis from the foods we eat. Some people such as growing children, pregnant women and breastfeeding mothers may need slightly more protein than what is recommended.
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