Palm oil is ubiquitous in food products, found in everything from ice cream to instant noodles. It was once a relatively rare ingredient, but food formulators have made a wholesale shift to palm oil, says Alejandro Marangoni, professor and Canada Research Chair in Food, Health and Aging at the University of Guelph. That’s because it’s inexpensive and was thought to be a healthier alternative to trans fats. “All the fat used in our food supply went from the partially hydrogenate…