The role nutrients play in the body can be compared to that of parts of a house.
Proteins are structural nutrients, as they are part of the composition of your body’s cells. They are used for renewing tissue as well as for making new tissue when you are growing.
What role do lipids and minerals play?
Lipids are also components of cells, especially essential fatty acids, such as omega-3s, which the body cannot produce. Your brain is primarily composed of lipids.
Some minerals play a key structural role. Calcium helps build bones, and phosphorous and magnesium play a role in ossification.