Our body consists to a considerable part of fats. For example, every cell has a fat membrane, and our brain is largely made up of nothing but fats (including omega-3 fatty acids). Our nerves and many metabolic processes also depend on fatty acids. But just from the right ones!
Surely you know that not all fat is the same. The classification of fatty acids and their meanings in the body are quite extensive. For this you can study for a very long time. You should know at this point that there are so-called essential fatty acids, which are those that the body needs vital. There are again different ones. In this context, we often talk about omega-3 and omega-6 fatty acids.