Grumpy? Meet lumpy. New research in the Journal of Consumer Psychology shows that a bad mood may lead to bad diet decisions. Bummed out people are more likely to pick indulgent foods and less inclined to consider the calorie consequences than happier people were. According to the study’s author, Merrill T. Gardner Ph.D., the reason for this may be evolutionary. Our brains may signal a problem and trigger a desire for an immediate solution that benefits us NOW. The result? A blatant disregard for future consequences. So the next time you make a supermarket run, think about something positive and future-focused that doesn’t cause worry or stress. And by all means, don’t let your negative mood lead to bad diet decisions.