This is from the Winter 2012 issue of Health Monitor magazine.

Before you bite into that doughnut or cheeseburger, consider this: It may cause your mood to crash, say Spanish researchers who studied more than 12,000 people. Their finding: Those who chowed down on lots of foods filled with trans fats (baked goods, drive-through fare, processed foods) had a 48% increased risk for depression compared with those who didn’t. Happier news? Olive oil and polyunsaturated fats (like those found in fish and vegetable oils) seem to fend off blue moods-something to keep in mind when making up your plate!