Following is my (very long) take on the Preventative Health Taskforce’s document Obesity in Australia: a need for urgent action. Let me state right now that I make no claims to being a statistical or scientific research expert, so I would love to hear others’ thoughts on this as well, and please correct me if I make faulty arguments!
The Taskforce is an independent advisory panel set up by the Australian Government to investigate current health issues and advise upon approaches to tackling them. From the Taskforce’s website:
The Hon. Nicola Roxon MP, Minister for Health and Ageing, announced the establishment of the Preventative Health Taskforce on 9 April 2008.
The Taskforce will provide evidence-based advice to governments and health providers on preventative health programs and strategies, focusing on the burden of chronic disease currently caused by obesity, tobacco and the excessive consumption of alcohol. The Taskforce will report directly to the Minister for Health and Ageing.
The Taskforce’s key deliverables for 2008-2009 will be to provide the Government with advice on the framework for the Preventative Health Partnerships between the Commonwealth and the State and Territories and to develop a National Preventative Health Strategy.
Obviously, I support what the Government and the Taskforce are trying to achieve in improving the health of all Australians, and I believe that a lot of the recommendations they have for tackling obesity are excellent (although I do wonder if they will actually tackle obesity). However, I am also concerned about some of the language they use and the ideas that they support while making these recommendations.
The Bad
Most of the things that fall under this category are covered in section 2 of the document, looking at the current statistics for and costs related to obesity in Australia.
I’m not going to argue with the actual numbers they give for how many people are currently classified as overweight or obese – I’m sure the numbers are accurate, since by the definitions over overweight (BMI 25>30) and obesity (BMI >=30), people either are or are not. What I do want to discuss is this:
The number of overweight and obese adults increased from 4.6 million in 1989–90 to 5.4 million in 1995, 6.6 million in 2001 and 7.4 million in 2004–05.
I think its misleading for them to quote these statistics without pointing out that the BMI ranges for overweight and obesity were changed in 1998. Actually, from the reference provided for this information, I have been able to track down the associated studies and determined from page 43 of How Australians Measure Up (1995) and page 91 of the 1989-90 National Health Survey published by the Australian Bureau of Statistics that the BMI category definitions used in Australia previously are the same as those used now, so disregard this argument. I’m leaving it in because I think its important for people to be aware that this argument does not relate to Australia, but I believe does still relate to America. Please note that I have no intention of misrepresenting anything!
I do have a lot of questions about the numbers they give as being as a result of being obese. I find it difficult to believe that there is any way to accurately determine how many cases of a disease are a result of obesity, which in my mind means that had this person not been obese, they wouldn’t have got the disease. The reference they give uses
this study as a basis for these numbers, which states that
‘Attributable’ health loss is health loss that is explained by past and current exposure to health risks. This is distinct from ‘avoidable’ health loss, which is health loss that might be averted through future changes in exposure to a health risk.
And in turn this study is based upon the WHO-initiated Comparative Risk Assessment project from 2004.
This publication is extremely long, and I will grant that I haven’t read it all. However, there are a couple of things in it that I’m curious about. First of all, it takes the BMI of ‘optimum health’ (whatever that means) as being 21, based on a study by Shetty & James in 1994. For those who follow this kind of thing, this has been called into question by a more recent study which suggests that BMIs between 25 and 30 actually have lower relative risks than those between 18.5 and 25.
The WHO publication also claims that
mechanisms by which increased bodyweight leads to the induction of cardiovascular diseases and excess mortality are not always clear. The effect is partly related to the frequent concomitant lack of physical fitness and physical activity in the overweight, but it is generally accepted that body-weight gain per se enhances insulin resistance and thus physical inactivity is not the sole explanation(pg 540)
Bolding mine. Although I do not dispute that there is a correlation between obesity and insulin resistance, I do question the causation. And so do others – there is now evidence that insulin resistance causes weight gain rather than weight gain causing insulin resistance, and that type 2 diabetes may be a disease of the gut. From Obesity and Diabetes:
Perhaps the most striking argument against weight loss being the most important factor in promoting diabetes control is the rapidity with which serum glucose returns to normal after gastric bypass, BPD and duodenal switch. This dramatic onset of euglycaemia sometimes occurs within days of surgery, and long before there is any significant weight loss.
I think it’s likely that in different circumstances, either the insulin resistance or the obesity could be the cause. But that makes me suspicious of anything which claims that XYZ people have developed diabetes as a direct result of being fat. Maybe they got fat because they have diabetes.
I also want to discuss the assignation of cost of days lost in the workplace to obesity. The Taskforce says:
Obese employees tend to be absent from work due to illness significantly more often than non-obese workers, and for a longer time, and are more likely than non-obese people to be ‘not in the labour force’.
I would suggest that a good portion of this is related to the fears obese people have of getting medical help. Studies have shown that medical personnel often hold negative views of obese patients, and these attitudes undoubtedly lead to inferior care and/or hostility which encourages obese people to avoid doctors. Would you visit a doctor when you knew they believed you were weak-willed, sloppy and lazy? And then there’s the fact that obese people’s medications are often not calculated to account for their bodies – yes, studies have found no statistical difference between [mortality rate of] obese and non-obese patients who were given chemotherapy based on their body weight. Which they currently aren’t. Yeah, that’s just so wrong.
And as far as obese people being less likely to be in the labour force? I’m going with fatphobia on that one as well. It takes absolutely no stretch of the imagination to picture two candidates for a job, equally experienced, except that one is fat and the other thin – who do you suppose will get the job? I think that if we could eliminate negative attitudes towards fat people (yes, I’m dreaming here), their absences from work due to illness etc would become a non-issue.
They’re also upset that
with the increasing prevalence of overweight and obesity nationwide, it appears that Australians may perceive being overweight as ‘normal’ and hence many overweight people may not consider that they have a problem.
Which frankly, I’m not sure how to approach. I don’t think it’s necessarily a bad thing that overweight people consider themselves normal – maybe they are, and there’s just something wrong with the classification system. Because you can be pretty damn sure that people who are deathfat know it, and they’re the ones who are most likely to have medical problems as a result of their fat. And with the increasing prevalence of extremely underweight people, do you think people who are underweight classify themselves as such?
The Good
On the good side, there are some excellent ideas which I believe will have a positive impact on the health and wellbeing (if not the weight) of Australians, and a couple of points which really, really need to be heard.
First of all, can we please get a press release out on the following? And maybe some billboards, posters, and a giant dirigible (bolding mine).
Food and alcohol play an important part in the social fabric of life, and simply lecturing people or taking a prohibitionist approach is unlikely to be successful or appropriate.
There are a wide range of weight loss programs available…[and w]hile these programs are popular, there is limited data on their effectiveness.
Overall, the evidence suggests that the prevention of obesity is the most realistic, efficient and cost-effective approach for dealing with childhood and adult obesity. This is due to the relative lack of success of treating obesity once it has become established, particularly long-term.
Add to that the following:
There is a clear need to increase the evidence base regarding obesity prevention and management through research, evaluation, monitoring and surveillance. This requires a much higher investment in the research and evaluation of weight reduction interventions and the causes of obesity.
Wait, am I the only one who reads this as ‘we don’t really know why people are fat or how to make them lose weight and we need more research’?!? Can you imagine how amazing that would be? If the Australian Government commits resources to proper obesity research, what will happen when all their studies start showing that it is not as simple as calories in = calories out? Although clearly the Taskforce at least already has some inkling of this, wouldn’t it be wonderful if the general population finally got the message?
Now onto their ideas about what can be done.
There are a wide range of weight loss programs available…[t]o ensure that industry practices are safe and effective, there is a need to review weight loss industry programs and to develop a common code of practice for the industry, covering issues such as costs, counsellor training, and the marketing and promotion of services.
YES. Based on this suggestion by the Taskforce, the Dieticians’ Association of Australia has said that
[A]ll commercial diet programs should be assessed by a body of experts similar to the Therapeutic Goods Administration, which assesses drugs for safety and efficacy before they can go on sale.
[R] regulation should require businesses marketing a diet program to provide evidence to a panel of experts showing what percentage of those who used the diet kept the weight off two years after starting.
And the news report where I got that quote? Said
It follows growing evidence that diets may actually be adding to the obesity crisis as overweight people lose weight rapidly while following programs but quickly put it back on after they stop.
HOLY FLYING SPAGHETTI MONSTER! Imagine what would happen if diet programs had to prove their efficacy! There would be NO MORE DIETS! And aside from my own personal glee at that prospect, I think that banning diet programs and products would make a significant contribution all on its own to the physical and mental health of Australians. Anyone who has been on a diet can attest to the mental strain it causes, and there’s plenty of evidence that yoyo dieting is worse for your health than just staying fat. Plus, it’s possible that this action alone could reduce the obesity epidemic, since the only thing dieting is proven to do is make you gain weight.
They also discuss ways to encourage healthier eating, and consider a ‘fat tax’ as well as suggesting subsidies for healthy foods such as fruit and vegetables. Happily, they point out that it is likely to be far more beneficial to subsidise fruit and vegies than to tax fast foods:
…targeted taxation on unhealthy foods is considered to be regressive as it would impact disproportionately on people and families on lower incomes
Subsidising healthy foods has an advantage in comparison …in that the greatest benefit would go to the most disadvantaged consumers. In addition, research supports interventions encouraging a greater intake of healthy foods rather than policies encouraging a decreased intake of unhealthy foods.
And they also address the need to improve access to these foods for people who are socially and/or geographically disadvantaged, and look at offering tax breaks/subsidies which will improve access to physical activity such as for gym memberships and the purchase of fitness equipment – for everyone, not just the fatties. Hell yes. Government dudes, please make fresh fruits and vegetables available and affordable for all, and improve the affordability of fun recreational activity!
Another idea is to prevent children from being exposed to ‘inappropriate marketing of unhealthy foods and beverages’, which I think is a great idea because frankly, I find exposing children to any kind of marketing somewhat disturbing, especially having just watched a documentary (which I now can’t find to link) about this and realising just how creepy and perverted the children’s advertising world is.
I also love the ideas about reshaping urban environments to encourage physical activity – more parks for people to play in, improved footpaths to encourage walking, bike paths to encourage cycling, the provision of shower and bike parking facilities, and so on. From a purely selfish perspective, I want the bike related stuff – I love to ride, and prefer when I can to ride on bike baths because its safer – I’m not comfortable riding in traffic, and if that was the only option for me, I would never ride. Luckily I am able to get to work via back roads which let me avoid this, but not everyone is so fortunate. Also, showers are great – I have ridden to a workplace without showers before, and cleaned up using baby wipes etc, but showers are so much nicer! Also, I’d be more willing to ride in the rain if showers are available, because that way I have some way to warm up afterwards.
And encouraging workplaces to promote physical activity? Brilliant. Please pass a law which requires that my employer not force me to sit in front of a computer 8 hours a day. I have no idea how that would work, but it would be swell.
And finally, they want to ‘improve public education and information’ and
‘strengthen, upskill and support primary healthcare workers and the public health workforce’. I support both these ideas as well – I don’t think there can ever be such a thing as too much education. I do however think that there’s something important which should be included under these headings – educate people about fatphobia, about how inappropriate and unhelpful it is. Teach people that diets don’t work and that fat (or thin) is not a choice. Teach people fat acceptance.
Because ultimately, one of the things I think will have the biggest affect on the health of Australians as relates to obesity? Is fat acceptance. I think the Taskforce came close, but sadly fell short. If we as a society can learn to accept people as worthwhile human beings regardless of their size, that will go a long way to improving national health. Fat people would be able to visit doctors without fear of being shamed, sent away without treatment, misdiagnosed or mistreated. People wouldn’t diet any more (which I think would have the biggest impact on the obesity epidemic) and their health wouldn’t suffer from continually abusing their bodies. Mental health and self esteem would be drastically improved. I realise that this would not happen quickly since fat-hatred is so deeply ingrained in our society at the moment, but surely it is an admirable goal. That is a world I want to live in.
All in all, I have to say I’m pretty excited by this document. I see this as a semi-public admission that diets don’t work, and that we don’t actually know how to make a fat person permanently skinny. I’m delighted that there are no suggestions of forcing all fatties to have surgery or eat only lettuce, and I think a lot of their ideas are excellent ones regardless of the influence they may have on the national waistline.
So, what do you think of all this? Do you think our Government will be on the right track if they follow these recommendations? Is there anything you would add?