Omega-9 fats are unnecessary fats that can be produced in the human body. Replacing omega-9 with some saturated fats in the diet has important metabolic benefits. Fats consist of long chains of hydrogen, carbon and oxygen linked together by molecular bonds. Fat chains can be likened to a necklace made of beads on a thread. Saturated fats contain strong single bonds on a strong thread that makes up the entire necklace. Monounsaturated fats contain one double bond, and are less chemically stable in the chain, making them more likely to break. Polyunsaturated fats contain more than one unstable double bond, making them brittle and extremely vulnerable to breakage