The fat-free and low-fat diet trend is a thing of the past (80s and 90s, to be exact). . . . Fat has beneficial functions like protecting our organs, maintaining cell membranes, promoting growth and development, and absorbing essential vitamins. Be aware that fats aren’t created equal. Choose heart-healthy unsaturated fats, such as olive and canola oil, nuts, nut butters and avocados over those that are high in saturated and trans fats, including fatty meats and high-fat dairy products.