A diagnosis of obstructive sleep apnea may raise the risk of osteoporosis, particularly among women or older individuals, according to a new study published in the Endocrine Society’s Journal of Clinical Endocrinology & Metabolism (JCEM).

The retrospective cohort study used records from Taiwan’s single-payer National Health Insurance program to track treatment of 1,377 people who were diagnosed with obstructive sleep apnea between 2000 and 2008. During the course of the next six years, researchers compared the rate of osteoporosis diagnosis in this group of obstructive sleep apnea patients to 20,655 people comparable in age and gender who did not have the sleep disorder.

Researchers found the incidence of osteoporosis was 2.7 times higher among patients with sleep apnea than their counterparts, after adjusting for age, gender, other medical problems, geographic location and monthly income. Women and older individuals faced increased risk of developing the bone condition.