Simplify the following text for a Grade 4 native English-speaking person.
Original: Usage of shortening lacking trans fats has grown , notably with the 2007 reformulation of Crisco such that it contains 0 g of trans fat per 12 g serving . Cookeen was also reformulated in autumn 2006 to remove trans fats .
Simplified: People making shortening try to take out the trans fats .