During digestion, the body breaks down the protein we eat into individual amino acids, which contribute to the plasma pool of amino acids. This pool is a storage reserve of amino acids that circulate in the blood.
The amino acid pool in the bloodstream readily trades with the amino acids and proteins in our cells, provides a supply of amino acids as needed, and is continuously replenished. (Think of it like a Vegas buffet of protein for the cells.)
Since our bodies need proteins and amino acids to produce important molecules in our body – like enzymes, hormones, neurotransmitters, and antibodies – without an adequate protein intake, our bodies can’t function well at all.
Protein helps replace worn out cells, transports various substances throughout the body, and aids in growth and repair.
Consuming protein can also increase levels of the hormone glucagon, and glucagon can help to control body fat.1 Glucagon is released when blood sugar levels go down. This causes the liver to break down stored glycogen into glucose for the body.
It can also help to liberate free fatty acids from adipose tissue – another way to get fuel for cells and make that bodyfat do something useful with itself instead of hanging lazily around your midsection!