<P> Dietary consumption of fatty acids has effects on human health . Studies have found that replacing saturated fats with cis unsaturated fats in the diet reduces risk of cardiovascular disease . For example, a 2015 systematic review of randomized control trials by the Cochrane Library concluded: "Lifestyle advice to all those at risk of cardiovascular disease and to lower risk population groups should continue to include permanent reduction of dietary saturated fat and partial replacement by unsaturated fats ." </P> <P> Numerous studies have also found that consumption of trans fats increases risk of cardiovascular disease . The Harvard School of Public Health advises that replacing trans fats and saturated fats with cis monounsaturated and polyunsaturated fats is beneficial for health . </P>

Most fats in food and the body are composed of