New Delhi, Jun 13 (ANI): As per a study conducted by researchers at Seoul National University, sleeping too much or not enough can both affect health adversely. Research found that when compared to people who slept six to seven hours a day, individuals receiving fewer than six hours of sleep were more likely to have metabolic syndrome and a higher waist circumference. Sleeping more than ten hours per day resulted in metabolic syndrome and high levels of triglycerides in men, while in the case of women, it was associated with metabolic syndrome, higher waist circumference, higher levels of triglycerides and blood sugar, as well as low levels of 'good' cholesterol (HDL-C). The authors of the study also found that nearly 11% of men and 13 % of women received less than six hours of sleep, while 1.5% of men and 1.7% of women received more than ten hours of sleep. As per the study, the metabolic syndrome was prevalent in just over 29% in men and 24.5% in women.