Question: what are the 4 functions of fat?
Answer: Provision of energy. Fats are a source of energy in the human diet, together with carbohydrates and proteins, the other two main macronutrients. ... 
Structural component. ... 
Carrier of vitamins. ... 
Other biological functions. ... 
Dietary recommendations for fats. ... 
Total fat. ... 
Saturated fatty acids. ... 
Trans fatty acids.