According to a new study published in the open-access journal PLOS Biology by David Smith of Cincinnati


Children's Hospital Medical Centre, US, and colleagues, the low blood oxygen levels of obstructive sleep apnea cause extensive changes in gene activity throughout the day.


Many genes' activity naturally fluctuates during the day, partly in response to the activity of circadian clock genes, whose regular oscillations induce circadian variation in up to half of the genome.

The discovery could lead to earlier diagnosis and tracking of the condition.


Gene activity varies in response to environmental conditions such as oxygen deficiency.


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