Andrew Huberman on Vitamin A

“I do take a foundational supplement which is my source of vitamin A in addition to my food sources.”

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“It's vitamin A that's essential for the so-called phototransduction cascade, the process by which the photoreceptors take photons, light energy, and convert it into electrical signals.”

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“These photo receptors, the rods and cones, have chemical reactions inside them that involve things like vitamin A. That chemical reaction converts the light into electricity within the eye.”

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“Retinoic acid, Retin-A, is actually a derivative of vitamin A. The pathway involving retinoic acid and vitamin A is very similar to the natural biological pathway by which photo pigments in the eye convert light information.”

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“That metabolic cascade, that biochemical cascade, is essential for vision. This is why you've been told that carrots help you see better 'cause they're high in vitamin A.”

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“Eating vegetables, the dark, leafy vegetables and things like carrots that have vitamin A in abundance, and eating them in close to their raw form, can help support vision.”

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“Remember vitamin A is a lipid soluble vitamin, so it can be stored in our body for long periods of time.”

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“She appropriately cautions against supplementing with vitamin A because as a fat-soluble vitamin, it's very easy to overdose vitamin A if one is supplementing with too much of it.”

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