Like protein soyabeans are high in fat too. Most legumes (except peanuts) contain between 2 to 14 percent fat, whereas soyabeans contains 18-25 percent fat. At the same time, most of the fat in soybeans is unsaturated and beneficial.
Polyunsaturated, monounsaturated and saturated fats make up 63 percent, 23 percent, and 14 percent respectively of the fat in soyabeans with saturated fat being the lowest. The polyunsaturated fat content of soybean includes linolenic acid or omega-3 fatty acid.
The presence of omega–3 fats makes it special as soyabeans are one of the very few plant sources of this essential fatty acid. Omega-3 fatty acids form an essential nutrient which helps to reduce risk of both heart disease and cancer.
Soyabean oil can be used in cooking. Some soy foods have the fat removed. Defatted soy flour is commonly available. Reduced-fat tofu and reduced or non-fat soymilk also form some low fat alternatives.