The other face of Christmas? In a bad mood, a kind of mild sadness that urges you to close in on the house. The blame is above all of the desserts. It’s a team of clinical psychologists from the university of Kansas, the authors of the research suggest not to overdo it with the food of the christmas season. Added sugars often are present in the delicacies typical of the holidays, researchers say, can trigger metabolic processes, inflammatory and neurobiological illness-related depression.