Are all fats bad for you? a. unfortunately there has not been enough research regarding fats and the effect fats have on the body to give an adequate answer to this question. b. yes. it is a proven fact that the body does not need fat. fat is bad for the body and has a direct correlation to many health problems. c. no. saturated fats and trans fats have great health benefits to the body. d. no. polyunsaturated fats and monounsaturated fats (such as olive oil, canola oil, soybean oil, and corn oil) have positive effects on the body. e. no. hydrogenated and partially hydrogenated fats have positive effects on the body.