Here’s a new study out of Japan showing that people with uncontrolled diabetes had about a 35% increased risk of developing dementia. The article talks about how diabetes can cause clogging and blocking of the arteries, leading to lack of oxygen and brain damage. But guess what else causes lack of oxygen? Obstructive sleep apnea. Hypoxia has been shown to cause brain damage in numerous sleep apnea as well as Alzheimer’s research studies. As always, researchers are careful to point out that association never implies causality.