“Fatty acids” are essential to human life because they are the cell’s primary energy source. Fatty acids also serve as cellular structural components. Omega-7 fatty acids are unsaturated fatty acids found in certain fish, like salmon and anchovy, and oils such as olive oil, macadamia oil, and sea buckthorn oil. Palmitoleic acid is one of the most common omega-7s. Omega-7 fatty acids are a class of unsaturated fatty acids in which the site of unsaturation is seven carbon atoms from the end of the carbon chain. Rich sources include macadamia nut oil and sea buckthorn (berry) oil in the form of palmitoleic acid, while dairy products are the primary sources of vaccenic acid and rumenic acid.