Fatty acids make fat. Most people thing that is a bad thing, but it’s not.
Good fatty acids are necessary for energy metabolism, which is critical to your body’s ability to burn fat as an energy source. Plus, fatty acids give your body the capacity to absorb fat-soluble vitamins and nutrients. Fatty acids are absolutely necessary for your body to survive.
The good fats are called essential fatty acids.
Why are they essential? Because they are absolutely necessary for good health, but your body can’t make them. You have to get them from the foods you eat.