New research has shed light on this risk factor for dementia.
People who attend the health checks are more likely to lose weight, lower blood pressure and give up smoking.
Dementia is the leading cause of death in Britain.
It turns out, getting too much shut-eye can be just as detrimental to your health as not having enough.
These changes can be spotted in the early stages of the disease.
It might be time to bid farewell to those late night Netflix sessions.