Red light increases color sensitivity for 40+?

https://sci-hub.tw/https://doi.org/10.1093/gerona/glaa155

Recent pilot study suggesting that looking at red light ~670 nm (so, think fire but they used an LED.) 3 min/morning, can maybe improve color contrast sensitivity for older (40+) individuals

Maybe there’s something to that bates sun-staring method?

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And article for people like me who have hard time reading science papers:

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Andrew Huberman mentioned his thoughts on this study.
He explained mitochondria and why red light is relevant for it.

Mitochondria - Energy producing organelle. Cortisol (which is related to preparing your body to take action) is in part from cholesterol brought into the mitochondria. All cells in your body needs energy. Neurons use the most energy. The photoreceptors are the neurons that use the most energy than any other cell in the body. It takes photons of light and converts it into electrical information for the retina and brain to understand. Because these cells use so much energy their mitochondria tend to run out and vision can suffer as a result. Red light can improve the function of mitochondria in photoreceptors. People were exposed to red light 3 minutes a day, and they were able to improve visual function to a certain degree. No effect on people 40 or younger. Light exposure had to happen early in the day, especially not past noon.

Great video about redlight that basically reiterates Andrew Huberman’s insistence that getting outside and being exposed to light energy from sunrise/sunset is extremely important and key to the health of every cell and organ in our body (in the same way oxygen and glucose are key for every cell’s/organ’s functioning.)

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