Not getting enough sleep or getting poor quality sleep may be a contributing factor to obesity. Says a study published in the ‘International Journal of Endocrinology’, sleep deprivation and sleep disorders may be altering human metabolism. Sleep loss also leads you to regain weight after losing it. In a study conducted by the University of Copenhagen, Denmark, and presented at the European Congress on Obesity, 195 adults with obesity followed a very low-calorie diet for eight weeks and lost an average of 12% of their body weight. Following the 8-week low-calorie diet, sleep quality and sleep duration improved in all participants. However, during the one-year weight maintenance phase, study participants who slept less than six hours per night, or had poor quality sleep, increased their BMI by 1.3 kg compared to good sleepers.