Sleep apnea is proving to be a drain on insurance companies.

Snoring was once considered an annoyance, however, research has shown that complications can increase the risk of several serious illnesses, including heart disease, stroke and dementia.

Testing can be a lucrative business, and labs have popped up in free-standing clinics and hospitals across the country. Over the past decade, the number of accredited sleep labs that test for the disorder has quadrupled, according to the American Academy of Sleep Medicine.

At the same time, insurer spending on the procedure has skyrocketed. Medicare payments for sleep testing increased from $62 million in 2001 to $235 million in 2009, according to the Office of the Inspector General.

Although the initial cost may be a burden on insurers the hope lies in the prevention of more serious and costly ailments in the future.