A reader's question reveals the real divide in how we approach health. A reader of Busting the Code to Ageing emailed me last week. She wanted to know whether people who engage with the book tend to focus on the practical interventions, the testing strategies, the supplementation protocols or whether they engage with the broader argument: that health should be understood proactively, not reactively. It's a sharper distinction than it might first appear, and she was right to d