Progress, Potential, and Possibilities Podcast / Show · 2026-07-23 · 56 min
Send us Fan Mail What if one of the most intriguing Alzheimer’s interventions isn’t a drug…but light? Light has long been recognized as essential for vision, sleep, and circadian rhythms - but could certain wavelengths of light actually influence the biology of the brain itself? Recent research into photobiomodulation is exploring whether carefully delivered near-infrared and red light can improve mitochondrial function, reduce neuroinflammation, enhance blood flow, and potentially slow aspects of cognitive decline. A newly published pilot study in the Journal of Alzheimer's Disease ( ) reported improvements in memory and cognition among individuals with mild cognitive impairment following six weeks of non-invasive light therapy. While the findings are early, they raise fascinating questions about whether non-drug technologies could someday complement traditional Alzheimer's treatments. Today we're joined by two guests approaching this challenge from different perspectives. Dr. Neda Rashidi-Ranjbar, MD, Ph.D. ( is a physician-scientist, neuroscientist, and clinical research leader at Unity Health Toronto - St.
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