Your last blood test
came back normal.
That word does more work than people think. It means you fall inside the range for a population that is mostly unwell. It doesn't mean you're where you want to be. And for one blood marker in particular, one your doctor probably never ordered, the gap between normal and healthy runs for decades. P. D. Mangan’s book and his peer-reviewed paper are both here, free, in full.
Keep going past iron
Iron is one lever. It is not the whole machine. Fixing your iron will not by itself make you lean, fit, and strong, and if this book leaves you thinking it will, it has done you a disservice. P. D. Mangan writes every week about the rest of it: training, protein, insulin, sleep, and the research as it lands.
No charge, and you can unsubscribe at any time. You can also follow P. D. Mangan on X.
Prefer the book offline? Take the PDF or the EPUB, which opens straight into Apple Books and works with Send to Kindle. Both free, no email needed.