Can light therapy prevent Alzheimer's?
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Light therapy, specifically involving exposure to 40 hertz flickering lights, has been shown to entrain neural oscillations and has a number of positive effects on the brain. In studies discussed by , this type of stimulation, called gamma entrainment using sensory stimulation (GENUS), was found to reduce amyloid plaques and phosphorylated tau, which are linked to Alzheimer's and age-related cognitive decline. This suggests that light therapy could potentially help prevent or mitigate some effects of Alzheimer's by promoting molecular pathways that enhance neuronal function and maintenance of synapses 1.
Additionally, discusses that while these therapies are being explored in clinical trials for Alzheimer's, dementia, and other forms of neurodegeneration, it is too early to recommend a specific protocol. However, it's important to note that for individuals prone to epilepsy, flickering lights can induce seizure, so caution is needed 2.
Red and near-infrared light therapies have also been highlighted for their positive effects on health and neuronal function. Glen Jeffery's research at University College London has shown improvements in visual function and the ability to preserve or reverse neuronal function with red light therapy, potentially beneficial for the retina and hippocampus, which are implicated in Alzheimer's disease 3 4.
While light therapy shows promise, it is important to approach this area of research with caution and consultation from healthcare professionals before considering it as a preventive measure for Alzheimer's.
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