HeyJaredStephen Thomas BSc (Hons) Substack
Exploring the science and benefits of low-carb, ketogenic, and carnivore diets through evidence-based research, expert insights, and practical guidance for optimal health.
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- 17
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- Sep 27, 2026
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Latest issues
The Water Aisle Has Lost Its Mind: A Chemistry Audit of DDW and Hydrogen Water (opens the original)
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Hello and welcome back.Today I want to talk about water. Yes, water. The stuff that falls out of the sky for free, because apparently we’ve all decided it isn’t good enough anymore. If you’ve walked down a wellness aisle lately, or scrolled health content online, you’ll know exactly what I mean. Plain old water simply isn’t trendy. What you’ll find instead are premium waters with very lofty promises and even loftier price tags.And the two biggest players in this game right now are Deuterium-Depl
The Sacred Injection: Why Nobody Ever Questions the Vitamin K Shot (opens the original)
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The Shot Nobody QuestionsIf you’ve had a baby in the last few decades, you know the drill.Baby arrives. Everyone cries. Within an hour, someone appears with a syringe and a very confident face, and your newborn gets a vitamin K injection in the thigh. And if you ask why — which is a reasonable thing to ask when someone is sticking a needle into a human who was, moments ago, inside another human — you get a look. Not a hostile look, exactly. More like the look you’d get if you asked why the fire
PRAL Explained: Are You Eating Too Much "Acid?" (opens the original)
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I’d made some sections too list-like and repetitive rather than speech-like; I’ve saved that preference and redrafted this so it flows more naturally for video. Every so often, nutrition throws another acronym at us and asks us to bow politely. This week’s contestant is PRAL, which stands for Potential Renal Acid Load. Now, it sounds impressive, doesn’t it?PRAL.It sounds like something that should arrive wearing a white coat, carrying a clipboard, and quietly judging your lunch. And, to be fair,
Low Ketones? You Might Still Be Fat Burning (opens the original)
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Low Ketones? You Might Still Be Fat BurningOne of the most common worries I hear from people eating a ketogenic or carnivore diet is this:“I checked my ketones and they were only 0.2 mmol/L. Does that mean I’m not burning fat?”The short answer is: no, not necessarily. A low blood ketone reading does not automatically mean you are not using fat for fuel. It might mean that. But it might also mean something completely different. This is where we need to separate fat burning from blood ketone level
Meat Consumption and the Planet: What They Don't Want You To Know (opens the original)
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Hello, I was recently interviewed by a journalist at the Financial Times about the rise in the popularity in the carnivore way of eating. Things like, how can I justify promoting an all-meat diet when livestock farming is supposedly destroying the planet. It’s a fair question, and I want to answer it honestly. But here’s the thing — the first question we should ask isn’t “is meat bad for the planet?”, it’s “how is this meat actually raised?” Because there’s a world of difference between an anima
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