They are in particularly high amounts in fatty or greasy foods, fried foods, and oils. They are also present in large amounts in nuts and seeds. Meat, even lean cuts, have a lot of fatty acid in them. Fatty acids and other nutrients in food reach the stomach where the process of digestion begins. These components of food are then absorbed by the cells that line the intestines.
Nutrients pass through the intestinal cells and into small blood vessels.
Very often the body has too much fatty acid around, either because we ate too much or because the body produced too much internally. We need to get rid of the excess fatty acid. In fact, fatty acids are the main source of fuel for the body during starvation. There is a delicate balance between having enough fatty acid around and having too much. The body normally has finely tuned mechanisms for maintaining this balance.