Ben Goldacre is god!!!
And it's funny (as well as scary). For example, the bit on how to do your own test of Hopi ear candles: "If you'd like to test this yourself, you will need: an ear, a clothes peg, some Blu Tack, a dusty flooor, some scissors, and two ear candles. I recommend OTOSAN because of their strapline ('The ear is the gateway to the soul')"
or on registering his dead cat for the American Association of Nutritional Consultants (which Gillian McKeith belongs to).
I'm buying a copy for my oldest son, who is far too gullible, and thinks Patrick Holford is God.