The 8 Most Unhealthy Vegetable Oils To Eat & Why This MD Avoids Them

“For all foods, we have to consider the nature of the fats,” Shanahan says. Traditional added fats, like butter, are closer to whole foods than refined oils are. “You don’t need high heat, you don’t need complicated equipment, you don’t need refining machinery,” Shanahan says about butter. “You just let the cream rise to the top, skim it off, and then you start churning it around, and that’s butter.”