14 Worst Foods for Brain Health

Microwave Popcorn
Many microwave popcorn brands pack their bags with trans fat. You’ve already heard that trans fats hurt your heart—by increasing inflammation and damaging blood vessel linings, which also harms your brain. Older adults with diets high in trans fats had lower cognitive abilities later in life, and their brains were smaller, found a 2011 study in Neurology. Skip foods that list “partially hydrogenated oil” in the ingredients.