Study identifies 14 risk factors for dementia, including 2 new ones. Here's what you can do about them.

Nearly 7 million Americans have Alzheimer's disease, a specific type of dementia, and a new study is highlighting two new risk factors to be aware of.

In the study, published Wednesday in The Lancet, researchers said considerable new evidence supports adding vision loss and high cholesterol to the list of potentially modifiable risk factors for developing dementia, a group of brain function-altering conditions. 

The authors note the importance of the findings for possible prevention as the number of people living with dementia is set to increase worldwide.