Yet another reason to treat sleep apnea: it helps keep blood sugars under control.
  This is important for people with prediabetes, who are often the same people who suffer from sleep apnea because they are overweight.
  A study showed CPAP use made a difference in blood sugar levels after just two weeks, according to a report in The Huffington Post.
  Study researcher Dr. Sushmita Pamidi, M.D., of the Department of Medicine at McGill University, said in a statement. "We found that optimal treatment of sleep apnea with continuous positive airway pressure (CPAP) for two weeks led to significant improvements in glucose levels following an oral glucose challenge without affecting insulin secretion, suggesting an improvement in insulin sensitivity."