I'd like to submit to Bad Science my teacher who gave us a handout which says that 'Water is best absorbed by the body when provided in frequent small amounts.' What I want to know is this. If I drink too much in one go, will it leak out off my arsehole instead? Thank you. Anton.

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.

I write about misuses of evidence in plenty of different spheres: scaremongering journalists, obvious quacks and naturopaths, and flaws in the way that evidence is used in mainstream academia, medicine and in (government) policy. One of the things I always found interesting is the same tricks are used to distort medicine in all of those domains.

I spend a lot of time talking to people who disagree with me - I would go so far as to say that it's my favourite leisure activity.

Most bloggers have no institutional credibility, and so they must build it, by linking transparently, and allowing you to easily double check their work. But more than anything, because linking sources is such an easy thing to do, and the motivations for avoiding links are so dubious, I've detected myself using a new rule of thumb: if you don't link to primary sources, I just don't trust you.

Homeopathy pills are, after all, empty little sugar pills which seem to work, and so they embody [..] how we can be misled into thinking that any intervention is more effective than it really is.

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.