You must have heard of omega-3 fatty acids and how much these benefit the body. There are many who probably haven't heard of omega-3 fatty acids and their health-benefiting properties. Omega-3 fatty acids are healthy fats required by the body to carry out various vital functions. Omega-3 fatty acids are essential fatty acids that fall under the category of polyunsaturated fatty acids and are of the three main types which include ALA, EPA and DHA.