I found out that trans fat and saturated fat are bad it different from saturated fat, what do you recommend?

Monounsaturated: Try to substitute monounsaturated fats. This translates into: substitute olive oil for butter and vegetable oil. Avoid or at least limit all forms of meat. Eat beans, vegetables, fruits freely and avoid processed food with high corn syrup and sugar content. Some quantity of nuts is okay. You could live forever.

Trans are worse.: Meats have some transfats, but most are manmade. Transfats are made by hydrogenating oils, which turns them into solids (shortening). Transfats are used in processed foods b/c they last longer on shelf that way -- cookies/pie crusts/chips/popcorn/donuts/creamer/margarine. They raise LDL (bad) and lower HDL (good) cholesterol, which leads to heart disease. Saturated fats are just as bad!