It can also cause major clogging of arteries, type 2 diabetes and other serious health problems. On the other hand, your body needs some amount of saturated fat to stay healthy. It is virtually impossible to achieve a nutritionally adequate diet that has no saturated fat. What you don’t need, however, are trans fats. Further, there are some people who do well with a low-saturated-fat diet -- the one-third who are carb nutritional types.