This continues the essentials page. That page makes the argument and lists the five things worth doing first. Below are the two places the detail actually lives — and for most people the register is the one to open.
Start here The exposure register Eighteen everyday exposures, each graded and each with one action, ordered by how much they cost the UK population rather than by how alarming they sound.Start with the four graded Strong: ultra-processed food and air pollution, which reach almost everyone, then radon and chronic night noise, which reach fewer people harder. Most of the rest are cheap, low-effort reductions rather than causes for alarm, and the register says so.
7 entries in the register have a full chapter behind them
You reach these from their card in the register, which is where they make sense. Listed here only so you can see what is covered.
Most of what is sold on longevity claims sits in the second category, and several sit in a third — a mechanism that is real, described accurately, and never tested in humans at all.
It is second deliberately. Reducing an exposure is usually free and usually better evidenced than anything you can buy.