How can trans fats affect my mood?

A recent Spanish study looked at more than 12,000 people. It revealed a 48% increase in rates of depression in people who had higher levels of trans fats in their blood. It seems these unhealthy fats can increase inflammation in the brain, creating unhealthy blood vessels and poor circulation in the brain -- both of which can contribute to mood problems. Since brain tissue is made mostly of fat, it makes sense that better-quality fat makes a better brain. In light of this research, the years of hydrogenated peanut butter and trans-fatty snack foods may be coming to a mood-lifting close.