Red Light Slows Retinal Aging in Animals

About this video

Dr. Glen Jeffery describes experiments in aging animals exposed to a daily burst of red light. He says the researchers counted rods in the animals’ retinas at old age and found a clearly reduced pace of retinal cell death. Jeffery explains the proposed mechanism in terms of mitochondria, which can signal cell death, with red light reducing the probability that a retinal cell dies.

Key takeaways

• Jeffery reports that daily red light exposure reduced retinal cell death in aging animals.
• Jeffery attributes the effect to red light acting on mitochondria, which can signal cell death.

Episode details: published December 8, 2025 · 55.3K views · 0:34 long. Summary written by Self Growth Videos from the episode itself. The science and protocols described are Andrew Huberman’s, presented for education — not medical advice. Consult a qualified professional before changing your own health practices.

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