A report from Taiwan finds that having sleep apnea may increase the risk of chronic kidney disease, reports Reuters Health.

Intermittent low oxygen levels during the night and fragmented sleep patterns may activate higher blood pressure, which would damage the kidneys and could make individuals more susceptible to chronic kidney disease, said Tetyana Kendzerska of the University of Toronto Institute for Clinical Evaluative Sciences, who was not part of the study in Taiwan.

But, “the findings from this study are limited by lack of information on sleep apnea and chronic kidney disease severity given that these conditions were defined through the health administrative data,” Kendzerska said.