The following groups have a high risk of developing the condition: 1)       The elderly. 2)       Diabetic patients. 3)       Alcoholics and drug addicts. 4)       Obesity. 5)       Sleep apnea (breathing disorder) patients. 6)       Underactive thyroid patients. 7)       Underactive pituitary gland patients. 8)       People with high cholesterol and fat levels. 9)       People with high blood pressure and high blood glucose. 10)   Patients with polycystic ovary syndrome (PCOS).