Science finally knows how physical exercise helps prevent dementia

The science community has known that exercise helps prevent dementia, but now they finally know why.

A newly published study from Goethe University in Frankfurt, Germany, followed 60 participants between the ages of 65 and 80. Half of the group was asked to exercise on a bike for 30 minutes, three times per week for 3 months.

SEE ALSO: Many people don't even know they have diabetes or prediabetes

In comparing the MRT and MRS brain test results from before and after the 12 week period, researchers concluded that physical activity influenced brain metabolism by restricting an increase in choline.

RELATED: Foods that may prevent Alzheimer's, according to an expert

Choline is a metabolite that rises as a result of an increased loss of nerve cells, which typically occurs in patients with Alzheimer's disease.

The benefits of regular exercise go beyond physical fitness. According to the researchers from this study, exercise also helps to protect cells.

RELATED: Notable people with Alzheimer's