Despite their tireless efforts, researchers have been unable to develop a safe and effective way of treating Alzheimer's disease (AD) using pharmaceuticals, which has meant turning to non-pharmaceutical methods. A new study has demonstrated the therapeutic potential of light therapy, or phototherapy, in treating AD, showing promising results in mice that the researchers hope can be just as effective in humans. In the study, the researchers used photobiomodulation (PBM), a non-pharmaceutical therapy that employs red and near-infrared lights to stimulate the body to heal itself. There's evidence to suggest that PBM causes an increase in metabolism and microcirculation in the brain, in addition to reversing oxidative stress and inflammation. Recent studies discovered that PBM can stimulate the brain's lymphatic system to remove wastes and toxins.