Gall stones: - Obesity is also frequently complicated by gallstones. Approximately 25% of obese individuals have gallstones, frequently resulting in surgery. The increase in cholesterol that results from obesity is one the major reasons for the increased incidence of gallstones.

Sleep disorder: - Obesity is frequently complicated by many medical problems. Typically, as people gain weight, they tend to feel tired all the time & may have problems sleeping. Problems with sleep may be indicative of a severe condition called pickwickian syndrome, or "sleep apnea". For people with this problem, it becomes progressively more difficult to breath at night as their weight increases. These people typically snore severely & have episodes when they stop breathing completely for up to one minute at a time. During these periods of not breathing, their heart rates may become very irregular, which can lead to fatal heart attacks. Frequently, these people transiently awaken when they resume breathing. This may occur dozens of times per night, causing them to feel tired the next day & even fall asleep while sitting in meetings or driving. Sleep apnea is a very serious complication of obesity.