Aging is probably the greatest risk factor.
Other better known risks include diabetes, cholesterol and physical and mental fitness.
But the study in the journal Neurology finds other health issues that may also be associated with dementia.
Those include:
Arthritis, trouble seeing, or hearing, chest, or skin problems, sinus trouble broken bones, even denture fit.
More research is needed to confirm that these non-traditional issues do in fact have a true link.