The companion to the episode. Every study behind the lithium-for-your-brain claim, tested one at a time, with the water-concentration data and the one measurement that changes the question.
Biochemistry, nutrition and metabolism
Ph.D. following the molecular trail
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Will Lithium Really Save Your Brain?
There is an element sitting in your brain right now, and nobody has established how much you are supposed to have. It may shape how you think, how you act,
Latest Field Note
Is Lithium a True Anti-Aging Compound?
The companion to the episode. Every study behind the lithium-for-your-brain claim, tested one at a time, with the water-concentration data and the one measurement that changes the question.
Previous Issues
Is Lithium a True Anti-Aging Compound?
Can You Actually Lower Your Biological Age?
Your “biological age” test is making a prediction, not taking a measurement. Why that changes what the number means. A test tells you your body
Tattoo ink ends up in your lymph nodes. Here's what that means for your cancer risk.
Two studies asked the same question about tattoos and melanoma and got opposite answers. Here's what that contradiction actually reveals, and what the evidence can and can't tell you yet.
Does Vitamin D Without K2 Calcify Your Arteries?
The claim that vitamin D needs K2 or it hardens your arteries, measured against the trials that actually scanned people's arteries.
Creatine Is Sold for Your Brain. We Still Can't Reliably Measure Whether It Arrives.
Everyone is selling creatine for the brain now. Thirty years of research, and the delivery question is still open.
Apigenin Is Trending For Sleep And NAD+. Here Is What The Science Says.
The two claims driving apigenin sales have the weakest human evidence. The preclinical data that's genuinely compelling isn't on the label.
Folic Acid: Poison, Useless, or the Most Successful Supplement in History?
The most successful fortification in modern history. The internet says it's toxic. The answer involves an enzyme nobody's talking about.
Every Magnesium Form Is Sold by Organ. The Human Evidence Doesn't Exist
Threonate for brain. Glycinate for sleep. The organ-targeting map is everywhere. A systematic review found zero human studies behind any of it.
Making Sense of the New Dietary Guidelines Controversy
The 2025-2030 guidelines sparked outrage over seed oils and saturated fat. Here's what the committee actually wrote.
The Truth About Rancid Fish Oil
Omega-3 supplements oxidize. The question is how much, how fast, and whether the testing data matches what's on the label.