There is a lot of anecdotal evidence online that claims CPAP therapy can cause brain fog. But is there any scientific proof to back this up?
A recent study looked at the effect of CPAP on cognitive function in patients with obstructive sleep apnea. While the study found that CPAP did improve cognitive function, it didn’t find any link between CPAP and brain fog.
So at this point, there is no evidence to suggest that CPAP causes brain fog. However, if you are experiencing this side effect, it’s important to talk to your doctor about it. They may be able to adjust your therapy or prescribe a different machine.