HealthDay News — For U.S. veterans with post-traumatic stress disorder (PTSD), the risk of sleep apnea increases along with the severity of the mental health condition, a new study contends.

Sleep apnea — a common sleep disorder in which breathing frequently stops and starts — is potentially serious.

Researchers looked at 195 Iraq and Afghanistan veterans who visited a Veterans Affairs outpatient
PTSD clinic for evaluation. About 69% were at high risk for obstructive sleep apnea, and the risk rose
along with PTSD symptom severity, the study authors said.

PTSD symptoms can include intrusive memories and nightmares, negative changes in mood and
heightened emotional reactivity.

Every clinically significant increase in PTSD symptom severity was associated with a 40% increase in
being at high risk for sleep apnea, according to the study published in the May issue of the Journal of
Clinical Sleep Medicine.

“The implication is that veterans who come to PTSD treatment, even younger veterans, should be
screened for obstructive sleep apnea so that they have the opportunity to be diagnosed and treated,”
co-principal investigator Sonya Norman, a researcher at the San Diego VA, said in a news release from
the American Academy of Sleep Medicine.

“This is critical information because sleep apnea is a risk factor for a long list of health problems such
as hypertension [high blood pressure], cardiovascular disease and diabetes, and psychological problems
including depression, worsening PTSD and anxiety,” she explained.

The link between sleep apnea and PTSD in veterans is not clear. Possible factors that may connect the
two disorders include combat-related sleep disturbances, chronic stress from PTSD, and poor sleep
caused by sleep apnea, the researchers suggested.

Norman SB, et al. Obstructive Sleep Apnea and Posttraumatic Stress Disorder among OEF/OIF/OND
Veterans. J Clin Sleep Med. 2015; 11(5):513–518.
PTSD Severity Linked to Higher Risk of Sleep Apnea in Veterans