Summary
Dr. Dawn covers six scientific curiosities including a groundbreaking segment on lithium orotate and Alzheimer's disease. She reviews a study from Yanker's lab showing that lithium is naturally present in the brain and is depleted in regions affected by Alzheimer's, with amyloid plaques acting as traps that sequester lithium away from healthy tissue. The key finding: lithium orotate, unlike lithium carbonate, is not absorbed by amyloid plaques, making it bioavailable to healthy brain cells. In mouse models, low doses of lithium orotate reversed disease-related brain damage and improved memory. Dr. Dawn notes that even in small human trials, 5mg daily of lithium showed benefits on memory tests, and that irritable or anxious individuals respond well to low-dose lithium. The episode also covers snake venom immunity research, cuttlefish sign language, updated CPR guidelines, and exercise as cancer prevention.
Key Points
- Yanker's lab confirmed lithium is naturally present in the brain and depleted in Alzheimer's-affected regions
- Amyloid plaques act as traps that sequester lithium, making it unavailable to healthy brain tissue
- Lithium orotate is not absorbed by amyloid plaques unlike lithium carbonate, keeping it bioavailable
- In mouse models, low-dose lithium orotate reversed brain damage and restored memory
- Small human trials with 5mg daily lithium showed benefits on cognitive tests
- Regions with higher lithium in water had lower dementia rates going back to 1970s studies
- Irritable and anxious individuals respond particularly well to low-dose lithium
- Peter Attia expressed cautious optimism about lithium orotate for Alzheimer's treatment
Key Moments
Amyloid plaques trap lithium in Alzheimer's brains
Dr. Dawn explains that Yanker's lab found lithium levels are lower in Alzheimer's-affected brain regions and that amyloid plaques act as traps that sequester lithium, depleting it from surrounding healthy tissue.
"So in other words, when you wave those things around, you create a ripple, and the ripple will have a different shape. And when they just recreated that shape with speakers, they got the same kind of responses from the cuttlefish. So now they're speculating that a cuttlefish may be comparable to octopus in terms of their intelligence. Of course, that is a speculation on minimal data, but..."
Lithium orotate avoids plaque absorption unlike carbonate
Dr. Dawn discusses how lithium orotate does not get absorbed by amyloid plaques, unlike lithium carbonate, meaning it remains bioavailable to healthy brain cells. In mice, low doses reversed brain damage and helped memory.
"We've also discovered that it doesn't correlate very well to the degree of disease, and there's some people who have lots of amyloid and very little sign of disease. So something else is going on here. The best thing, and it's not all that great, to emerge in Alzheimer's in the last couple of years is the tau test test."
Low-dose lithium benefits in human trials
Dr. Dawn mentions that even in small human studies, 5mg daily of lithium showed cognitive benefits, and that irritable or anxious individuals respond particularly well to low-dose lithium supplementation.
"within five minutes have an excellent chance of walking out of the hospital better than 50-50. If they aren't defibrillated within five minutes, it drops down to 10%. So let's get that thing going. And of course, at sporting events, they've got your handy-dandy portable defibrillator right there, ready to go. I wanted to give you a little bit of a statistic, and this is based on"
