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A new study in mice found those raised with exercise wheels and toys had 40 percent fewer deposits in the brain thought to be associated with Alzheimer's disease.

The mice also had improved function in genes involved with learning, memory, brain cell survival and new blood vessel development.

Researchers believe exercise helps fight off the dangerous deposits, now researchers want to know if these same findings can be seen in humans.

The study was published in the journal Cell and was led by researchers at University of Chicago Medical Center.

The mice also had higher levels of an enzyme involved that breaks down the ameloyd deposits in the brain as well as increased activities of genes involved in learning, memory brain cell survival and the growth of new blood vessels.