We will see the rhetorical sleights of hand and amateurish errors that have led to you being repeatedly misled about food and nutrition, and how this new industry acts as a distraction from the genuine lifestyle risk factors for ill health, as well as its more subtle but equally alarming impact on the way we see ourselves and our bodies, specifically in the widespread move to medicalise social and political problems, to conceive of them in a reductionist, biomedical framework, and peddle commodifiable solutions, particularly in the form of pills and faddish diets. I will show you evidence that a vanguard of startling wrongness is entering British universities, alongside genuine academic research into nutrition. This is also the section where you will find the nation’s favourite doctor, Gillian McKeith, PhD. Then we apply these same tools to proper medicine, and see the tricks used by the pharmaceutical industry to pull the wool over the eyes of doctors and patients.
Next we will examine how the media promote the public misunderstanding of science, their single-minded passion for pointless non-stories, and their basic misunderstandings of statistics and evidence, which illustrate the very core of why we do science: to prevent ourselves from being misled by our own atomised experiences and prejudices. Finally, in the part of the book I find most worrying, we will see how people in positions of great power, who should know better, still commit basic errors, with grave consequences; and we will see how the media’s cynical distortion of evidence in two specific health scares reached dangerous and frankly grotesque extremes. It’s your job to notice, as we go, how incredibly prevalent this stuff is, but also to think what you might do about it.
You cannot reason people out of positions they didn’t reason themselves into. But by the end of this book you’ll have the tools to win – or at least understand – any argument you choose to initiate, whether it’s on miracle cures, MMR, the evils of big pharma, the likelihood of a given vegetable preventing cancer, the dumbing down of science reporting, dubious health scares, the merits of anecdotal evidence, the relationship between body and mind, the science of irrationality, the medicalisation of everyday life, and more. You’ll have seen the evidence behind some very popular deceptions, but along the way you’ll also have picked up everything useful there is to know about research, levels of evidence, bias, statistics (relax), the history of science, anti-science movements and quackery, as well as falling over just some of the amazing stories that the natural sciences can tell us about the world along the way.
It won’t be even slightly difficult, because this is the only science lesson where I can guarantee that the people making the stupid mistakes won’t be you. And if, by the end, 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.
Matter
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 – and repeatedly I meet individuals who are eager to share their views on science despite the fact that they have
Dismantling our early, more outrageous pseudoscientific claims is an excellent way to learn the basics of science, partly because science is largely about disproving theories, but also because the lack of scientific knowledge among miracle-cure artistes, marketers and journalists gives us some very simple ideas to test. Their knowledge of science is rudimentary, so as well as making basic errors of reasoning, they also rely on notions like magnetism, oxygen, water, ‘energy’ and toxins: ideas from GCSE-level science, and all very much within the realm of kitchen chemistry.
Detox and the theatre of goo
Since you’ll want your first experiment to be authentically messy, we’ll start with detox. Aqua Detox is a detox footbath, one of many similar products. It has been promoted uncritically in some very embarrassing articles in the
We sent Alex for a new treatment called Aqua Detox which releases toxins before your eyes. Alex says: ‘I place my feet in a bowl of water, while therapist Mirka pours salt drops in an ionising unit, which will adjust the bioenergetic field of the water and encourage my body to discharge toxins. The water changes colour as the toxins are released. After half an hour, the water’s turned red … she gets our photographer Karen to give it a go. She gets a bowl of brown bubbles. Mirka diagnoses an overloaded liver and lymph – Karen needs to drink less alcohol and more water. Wow, I feel virtuous!’
The hypothesis from these companies is very clear: your body is full of ‘toxins’, whatever those may be; your feet are filled with special ‘pores’ (discovered by ancient Chinese scientists, no less); you put your feet in the bath, the toxins are extracted, and the water goes brown. Is the brown in the water because of the toxins? Or is that merely theatre?
One way to test this is to go along and have an Aqua Detox treatment yourself at a health spa, beauty salon, or any of the thousands of places they are available online, and take your feet out of the bath when the therapist leaves the room. If the water goes brown without your feet in it, then it wasn’t your feet or your toxins that did it. That is a controlled experiment: everything is the same in both conditions, except for the presence or absence of your feet.
There are disadvantages with this experimental method (and there is an important lesson here, that we must often weigh up the benefits and practicalities of different forms of research, which will become important in later chapters). From a practical perspective, the ‘feet out’ experiment involves subterfuge, which may make you uncomfortable. But it is also expensive: one session of Aqua Detox will cost more than the components to build your own detox device, a perfect model of the real one.
You will need:
One car battery charger
Two large nails
Kitchen salt
Warm water
One Barbie doll
A full analytic laboratory (optional)
This experiment involves electricity and water. In a world of hurricane hunters and volcanologists, we must accept that everyone sets their own level of risk tolerance. You might well give yourself a nasty electric shock if you perform this experiment at home, and it could easily blow the wiring in your house. It is not safe, but it is in some sense relevant to your understanding of MMR, homeopathy, post-modernist critiques of science and the evils of big pharma. Do not build it.
When you switch your Barbie Detox machine on, you will see that the water goes brown, due to a very simple process called electrolysis: the iron electrodes rust, essentially, and the brown rust goes into the water. But there is something more happening in there, something you might half-remember from chemistry at school. There is salt in the water. The proper scientific term for household salt is ‘sodium chloride’: in solution, this means that there are chloride ions floating around, which have a negative charge (and sodium ions, which have a positive charge). The red connector on your car battery charger is a ‘positive electrode’, and here, negatively charged electrons are stolen away from the negatively charged chloride ions, resulting in the production of free chlorine gas.
So chlorine gas is given off by the Barbie Detox bath, and indeed by the Aqua Detox footbath; and the people who use this product have elegantly woven that distinctive chlorine aroma into their story: it’s the chemicals, they
