Dr. Jack Wolfson: "Is there any role at all for retinyl palmitate supplementation, vitamin A?"

Dr. Jack Kruse: "No […] Excessive retinol in any form, I don't care if it's synthetic or even natural, has been associated with significant problems. […]

"It has to be linked to circadian biology. That's what controls it. […]

"You can't go taking something exogenously and thinking you can replace it endogenously.

"The cool thing is, if your redox level isn't trashed, eating liverwurst or eating seafood every so often helps prime the whole system. Mother nature and evolution designed you to take the pieces and parts […] to do the right things. […]

"Sunlight controls the entire system, both in the eye and all the peripheral clock genes that are present. Guess what controls the peripheral clock genes? Melanopsin. Guess what controls the SCN? Turns out it's melanopsin again […]

"When you have blue light or non-native EMF, really any other part of the spectrum besides visible light, it disassociates the retinol from the melanopsin. […]

"When retinol comes on, [if] it's not connected to the circadian mechanism it becomes toxic. Which is why I tell people, 'Do not supplement with it.' Because what does it do? It destroys leptin biology. […]

"The retinol locally destroys the photoreceptor. It's the same reason why we have AMD in the eye, because when retinol gets out there, it thins the retina. It destroys it. OK? Because it's ruining rhodopsin, melanopsin, and all the cones. It's also the reason why people get cataracts." —Dr. Jack Kruse with Dr. Jack Wolfson @ 32:44 – 39:13 https://youtu.be/I537lQoiu5c&t=1964