Harcombe on the Radio

Publications here: http://www.zoeharcombe.com/publications/

Zoë Harcombe - PhD in public health nutrition.

Zoë has recently completed a PhD in public health nutrition. The full title of her thesis is: “An examination of the randomised controlled trial and epidemiological evidence for the introduction of dietary fat recommendations in 1977 and 1983: A Systematic Review and Meta-analysis“. Zoë researches in the fields of nutrition, diet, dietary advice, diet-related health and obesity and reads, writes and talks about these subjects. Her goal and drive is to reverse the obesity epidemic. She has clear views on how it started and what we need to do to stop it and these were published in 2010 in the 134,000 word book: The Obesity Epidemic: What caused it? How can we stop it?

Dr. Zoë Harcombe PhD Clearly Explains The Problems With current Healthy Eating Guidelines

In a study of formerly obese people, researchers at the University of Florida found that virtually all said that they would rather be blind, deaf or have a leg amputated than be obese again. That is the extent of our desire to be slim and yet two thirds of people in the UK, USA and Australia are overweight and one quarter obese. Why?

To be slim, to achieve the thing we want more than our sight, hearing, or mobility, we are told that we just need to “eat less and/or do more.” Quite specifically, the advice is “One pound of fat contains 3,500 calories, so to lose 1lb a week you need a deficit of 500 calories a day.” (ref 2)

So, why don’t we just follow the advice? Why on earth do we have an obesity problem, let alone an epidemic, when we so desperately want to be slim?

Busting Myths about Nutrition

Don't be a Vegan, and Preferably Avoid Being a Vegetarian.

I've previously written about vegetarian diets in Open Future Health. Here is a good place to start. Zoe Harcombe brings expertise to the topic that I can't offer.

On 27th January 2018, the Daily Mail (In the UK.) started a series of articles to promote a book by Dr Michael Greger. Dr Michael Greger is a strident vegan, and he is being strongly promoted on the Internet. The book is called “The How Not to Die Cookbook.”

Sadly, in modern society far too many young people with idealistic visions are choosing to eat a vegetarian and sometime a vegan diet. They are resolute about their choices, and one day bad personal health will force them to have a change of heart. For those who are willing to listen, Zoe Harcombe explains why a vegan diet is a very bad idea, and why a vegetarian diet is a difficult option to follow.

Calorie Nonsense

It is an almost universally held belief that people who are overweight just need to eat less and/or do more. The idea that eating less will make you weigh less assumes that the body cannot and does not adjust. It can and it does.

To think that if you eat 500 fewer calories the body will give up 500 calories of fat, to make up the difference, is the ultimate naivety in the world of dieting. The body is not a machine that converts calories into fat.

The idea that a reduction of 500 calories leads to the body giving up 500 calories of fat assumes that neither the BMR requirement (1,500 calories) nor the additional requirement (500 calories) change. In reality both change.

Think about it – you eat less food and they basial metabolic rate adjusts to maintain homeostasis.

The exact same applies for doing more. If you think that you can eat the 2,000 calories needed for the day and then try to do 500 more calories worth of exercise, with the body making no adjustment elsewhere, you are wrong.

Furthermore, exercise and BMR require quite different calories. Exercise is arguably best fuelled by carbohydrate (it provides glucose quickly for the body to use). BMR activities need fat, protein, vitamins and minerals. Carbohydrates can be useful for the vitamins and minerals they provide, but the macro nutrient, the carbohydrate itself, can only be used for energy, or fat making – not cell repair and fighting infection. Hence – if you eat 1,500 calories of carbohydrate (as the average citizen of the developed world currently does) – it can’t be used for body maintenance – you need to burn if off down the gym or you will gain weight.