Archives For Wheat Belly

I have to hold my hand up at the outset and acknowledge that this post is going to be little more than a highly abridged version of Gary Taubes work in “The Diet Delusion“. That is to say, your time may be profitably spent reading his book instead of this post. I’m writing this really only to vent my frustration at the endless repetition of myths that Taubes so compelling takes apart in his book.

There have been a quite surprising volume of health/nutrition related programmes, and news features on UK television recently, ranging from: ‘Supersize vs. Superskinny’; to news coverage of the Harvard School of Public Health’s ‘Red meat increases cancer risk’ study; to Horizon documentaries like ‘The Truth About Fat’ and ‘The Truth About Exercise’.

What I find particularly remarkable about so much of the content is not what’s included, but what’s left out. That is to say that all of these programmes that I have seen assume that the viewers are already in possession of various ‘facts’ that require no explanation or back up. Things that we all ‘know’, such as: Dietary fat is bad for you, saturated fat is especially bad for you, cholesterol is bad for you, vegetable oils are more healthy than animal fats, wholegrains are healthy, high fibre is good, starches should form the basis of our meals, milk is healthy if it’s low fat…etc.etc.

Some time ago I saw another news story in which a member of the public was interviewed about lifestyle, and came out with the line: “We all know how to eat healthily…”. Obviously this is true, we’ve all heard it many times, and we can look at the Department of Health website if we’re not sure, that will show us the ‘Eatwell Plate’ to guide us to the right choices.

This is the conventional wisdom: low fat, high carbohydrate; 5 a day; and, increasingly, eat less meat. The question that Taubes set out to answer in “The Diet Delusion” was: ‘If we know so much about healthy eating, and sales of low fat and fat free foods have been so strong, why are obesity (and heart disease) rates still rocketing up?’ The answer, of course, is that we’ve been given bad advice on how to eat for the last fifty years or so.

Horizon’s ‘The Truth About Exercise’ was the first programme to make me think about the regurgitation of  conventional wisdom. The point of the programme was apparently to look at how exercise might prevent the presenter form succumbing to diabetes. One of the segments looked at his blood lipids (how much fat was in his blood) after eating, and if exercising before eating had an impact on his blood lipid profile. The meal used for this was a ‘typical’ Scottish breakfast.

The expert, Dr John Gill  of the Institute of Cardiovascular and Medical Sciences at Glasgow University made a point of the fat in the breakfast (making no mention of the sugars present in the beans, bread, tomato etc.), and then took some of the presenter’s blood after eating, showing the viewer the level of fat in his blood. The message was very clear – eat fat, and the fat in your blood will increase. I’m no biochemist, but my understanding is that the mechanisms of digestion are a little more complicated than that. For example, if you’re eating fruit, and you’re muscle stores are full of glycogen then your liver will turn the fructose from the fruit into triglycerides (fat) that will then be transported by your blood to fat cells.

Horizon also presented ‘The Truth About Fat’ a couple of weeks later. It was refreshing to see that the gastric surgeon turned presenter for the programme changed her view of obese people (it turns out they don’t just lack her self-control). Disappointing to find that the ‘Truth’ that the programme offered lay in surgery, or hormone regulation medication that may be developed. Also disappointing to see the presenter selling the programme on breakfast television and casually mentioning the hormones that make fat people “want fatty foods”. A throwaway remark perhaps, and yet more reinforcement of the idea that fat makes you fat. The evidence is that it is carbohydrate that makes you fat, and addicted to it, to boot. (Read ‘Wheatbelly‘ for more on the addictive properties of wheat in particular).

The view of obese people often seems to be that they are greedy and lazy, and that if they only had more discipline, and exercised more, they would lose weight. I can accept that there are a lot of obese people who are continually consuming manifestly bad stuff – high sugar fizzy drinks, doughnuts etc., and I’m also sure that there are plenty of people who are trying hard to lose weight by “eating right”, but unsuccessful because what we’ve been told is the right way to eat is almost exactly the opposite of what will encourage weight loss. (According to Taubes the truth about healthy eating was being established by German scientists before the second world war but, tragically, there work was ignored – German science having been discredited by the horrors of the Nazi regieme).

Another BBC news story that I happened upon was about the popularity of ‘free-from’ foods (gluten-free, dairy-free etc.). The segment confidently asserted that only 1-2% of us are allergic to certain foods (subtext = it’s a fad). Whilst a small percentage of people may be allergic to gluten, testing is often unreliable, and many more of us may not tolerate gluten well. You don’t have to be celiac to suffer negative effects from gluten, possieffecting not on the gut, but the brain!   The dietician interviewed in the piece suggests that, if we exclude things like wheat and dairy, not only will we be eating a limited range of food, but we may be in danger of becoming malnourished (around 1:40 in the clip if you’re really interested). The story was followed by a discussion in the studio. The BBCs obligation to impartiality clearly doesn’t extend to nutrition, as the BBCs resident GP was the only person on hand to comment. Amongst her advice to viewers: “Do not consult a nutritionist, they are unregulated. Only consult a dietician” – like the one in the segment who thinks that eliminating wheat and dairy from your diet may result in malnutrition! If you visit the website of the British Dietetic Association seeking advice on healthy eating you will quickly find yourself looking at the ‘Eatwell Plate’, pictured above. Yes, meals based on starches, that we know make us fat. In fact, unless we are indulging in regular endurance type activity, we do not need any dietary carbohydrate because, by a process called gluconeogenesis, our body can make carbohydrate from other sources. (I’m not advocating a zero-carb diet, just trying to underline the crassness of suggesting that carbohydrate needs to form the basis of all our meals).

The Harvard School of Public Health’s study implicating red meat consumption represented another opportunity for the BBC news to cover itself in glory, presenting the story in an entirely uncritical light, and featuring a representative of Cancer Research declaring that “We now know that red meat causes cancer.” (To understand why this study is only fit for “lining a budgie’s cage” please see herehere, or here.)

There was no explanation of any possible mechanism, no-one to question how the data was gathered or interpreted. This was not a clinical trial that could legitimately be said to prove anything, yet the ‘findings’ were presented as incontravertible fact. Later that day in the gym I heard a trainer confidently asserting  that his client must get his protein needs from sources other than red meat. Fairy tale has become fact.

You might well argue that misrepresentations about eating red meat are less serious than those about how we become and remain fat – the consequences of people eating less red meat aren’t likely to be nearly as serious as the consequences ofoverweight people beingadvised to eat less fat and more starch (slow releasing sugar is still sugar). The pressing question is how we can be fit and well as a society if poor information, through repetition (often by authority figures), becomes popular belief? What’s the definition of insanity? How about repeating the low fat/high carbohydrate mantra and expecting obesity/cardio vascular disease rates to go down.

There’s a wealth of information available, not least of which is Taubes’ incredibly extensively referenced book. If you don’t fancy reading that, perhaps consider listening with a sceptic’s ear next time there’s a media story on nutrition/health.

Zealotry

March 10, 2012 — 1 Comment

Listening to as many podcasts as I have, I’ve heard several questions addressed to the presenters along the lines of “How can I spread the word better?”, “What name could we use instead of ‘Paleo’ to get more people interested?”, “How can I convert my family/friends?” etc. etc. More often than not the response is something like “Why waste your breath? If people want the information they’ll come looking for it.” The trouble is that the answer is probably being given by someone who receives 100’s of emails every day seeking help, and that’s not the case for the amateurs out there like me, who are excited by what they’ve learned and want to pass it on.

It’s a cliche for good reason that people who have successfully given up smoking become the most vigorous advocates for going smoke-free. Perhaps it’s deep in our DNA to be this way. Since discovering and embracing the primal lifestyle I’ve seen in myself an apparent need, reflex, desire, urge… (one or more of those) to evangelise about food. Specifically the food that I believe it’s right to be eating. I was a vegetarian for many years (there’s that reformed smoker thing), and quite a stroppy one at that. I was younger, it was an emotional/sentimental thing, and there may have been a girl in the picture that helped my choice to give up meat. I don’t think that I was quite as enthusiastic about spreading the vegetarian word as I am at spreading the primal/paleo word, but I certainly wasn’t shy about letting people know what I felt about meat eating.

I know that I am not alone in wrestling with the problem of not being able to shut up about nutrition – the friend that showed me the path to the paleo way has had his own struggle with this. It appears that a lot of people in the paleo ‘community’ latch on to the idea very strongly because the framework of evolutionary biology seems so logical. Perhaps it’s inevitable that if something works for you, and resonates with you, the urge to spread the word is strong. I had back problems for about 18 months before someone pointed me toward Pilates, and in a very short time the practice of Pilates had ‘fixed’ me. I was pretty excited, and convinced that everyone with back problems should do Pilates. And hey, why just back problems? Anyone with any physical problem or injury will surely be fixed by Pilates. As a teacher I’ve seen this pattern repeated many times –  Pilates helps someone overcome chronic pain and consequently changes their life. As a result Pilates then becomes ‘bigger’ than a mode of exercise, and reaches the status of miracle, at which point evangelism may well follow.

What drives us to evangelise? I realise that in choosing this word I’ve gone into the realm of religion, and this highlights for me the whole problem of feeling the need to share. I’d rather base my ideology in science, and specifically evolution. I think I can reconcile this, and perhaps simply need to choose my words more appropriately. While Christian evangelism is dedicated to saving people from one unprovable idea (hell), and giving them hope of another unprovable idea (heaven), the lifestyle that I’m espousing offers the real possibility of health and longevity, and salvation from the equally real possibility of ill-health and disease. Surely that’s a reasonable thing to be trying to share?

I had a great lesson recently in the value of sharing information with people that aren’t very interested. We had family staying with us, part of the Belgian arm of my family, for whom bread is the principle component of, typically, two of their daily meals. Perhaps I was conspicuous in my non-eating of bread (perhaps I may have said something about the evil of wheat-but I don’t think so…), either way, one of the teenagers in the family asked me what the problem was with wheat. I launched into an explanation of the trinity of bad things about wheat (gluten, lectins, phytates), and quite succinctly, as I recall. I didn’t have high hopes but still felt slightly crushed when he, and the rest of the family, still attacked the bread with gusto at the next meal. As my wife is inclined to say to me when I tell her about an exciting new nutritional nugget that I’ve picked up: “It’s just someone’s opinion”…. (Of course that’s often not the case, but it serves to reign me in a little).

I’ve noticed in my 8 year old son an enthusiasm for acquiring knowledge that often extends to an enthusiasm for sharing that knowledge. On the whole it’s quite charming in a child, but perhaps not so much in an adult. I recognise in myself the danger of sharing information  with too much of a “listen to how much I know” motivation – definitely something that I would like to control as much as possible. The struggle is to balance this with wanting to pass on things that I imagine others might want to know. I’m reminded of reading John Pilger years ago and feeling sure that lots of people would want to know about all the evils that he described being perpetrated in our names. Even as I write this the parallel seems even stronger than I had thought – the collected information from sources such as ‘Good Calories, Bad Calories‘, ‘Wheat Belly‘, and ‘The Vegetarian Myth‘ adds up to something looking very much like governments and vested interests misleading the people, disempowering them and making them sick (while multinational corporations make VAST profits, and public and private healthcare costs spiral beyond comprehension). Who wouldn’t feel pissed off about that?

What to do? I care about the health of my family and friends. I care about the well-being of the people that I teach. What does that require of me? Respect for their values, certainly, and support too. I know that my vegetarian friend doesn’t want me trying to persuade her of the merits of eating meat, but if I hear her talking of trying to lose weight by eating carbohydrate, instead of protein and fat, I’m bound to say something….

So here’s a pledge to everyone that knows me:  I will try really hard to only offer information when there’s a hint of invitation, and to assume that, if you take soy milk in your coffee, you probably don’t want to know why that’s a bad idea.