Trans Fats or Hydrogenated Fats. Trans fats are actually unsaturated fats, but they can raise total and LDL (bad) cholesterol levels while also lowering HDL (good) cholesterol levels. Trans fats are used to extend the shelf life of processed foods, typically cookies, cakes, fries and donuts.rans Fats or Hydrogenated Fats. Trans fats are actually unsaturated fats, but they can raise total and LDL (bad) cholesterol levels while also lowering HDL (good) cholesterol levels. Trans fats are used to extend the shelf life of processed foods, typically cookies, cakes, fries and donuts.
High-efficiency particulate arrestance (HEPA), also sometimes called high-efficiency particulate arresting or high-efficiency particulate air, is a type of air filter.
Some vacuums also use HEPA filters to reduce particles returned to the air. How HEPA Filters Clean the Air. A HEPA filter works when the air pushes through it. The filter's ultra-fine mesh catches 99.7 percent of all particles 0.3 microns or smaller, which includes tobacco smoke, pet dander, mold spores, dust mites, and pollen, according to WebMD.