In the past, [medicalization]has been portrayed as something that doctors inflict on a passive and un-suspecting world - an expansion of the Medical Empire. But in reality, it seems that these reductionist bio-medical stories can appeal to us all, because complex problems often have depressingly-complex causes, and the solutions can be taxing, and unsatisfactory.

Real science is all about critically appraising the evidence for somebody else's position.

And if, by the end [of this book], you reckon you might still disagree with me, then I offer you this: you'll still be wrong, but you'll be wrong with a lot more panache and flair than you could possibly manage right now.

If I was writing a lifestyle book it would have the same advice on every page, and you’d know it all already. Eat lots of fruit and vegetables, and live your whole life in every way as well as you can: exercise regularly as part of your daily routine, avoid obesity, don’t drink too much, don’t smoke, and don’t get distracted from the real, basic, simple causes of ill health. But as we will see, even these things are hard to do on your own, and in reality require wholesale social and political changes.

The placebo effect is one of the most fascinating things in the whole of medicine. It's not just about taking a pill, and your performance and your pain getting better. It's about our beliefs and expectations. It's about the cultural meaning of a treatment.

As it is a major component of blood, water is vital for transporting oxygen to the brain. Heaven forbid that your blood should dry out.

You are a placebo responder. Your body plays tricks on your mind. You cannot be trusted.