Seasonal changes in weight increase the risk for metabolic syndrome. According to the current study, individuals with metabolic syndrome have more seasonal changes in their mood and behavior. The study concludes that the seasonal changes in weight in particular are linked to metabolic syndrome. With people having the ‘winter blues’ the risk of metabolic syndrome is heightened by 56 per cent. The negative effect of the seasonal changes equals to the protective effect against metabolic syndrome gained with regular physical exercise.