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Have you wondered why slimming clubs and traditional diets don’t work for the long term? Perhaps you’ve tried them yourself and been back again and again.

If you’ve got a sensitive digestion, or irritable bowel syndrome you’ll have a lot of symptoms that don’t work effectively with typical dieting approaches.

This is a long article, but here are some of my thoughts on why IBS makes dieting harder.

Restrictive dieting is tough

As soon as you’re told you can’t have something, you want it.

Psychologically we want those foods, we think about them even more when we’re told they are forbidden.

When people go sugar free you know they can only think about sugar. Or if they say I’m giving up alcohol, you really keep thinking about how you’re NOT having a glass of wine this Friday.

So it’s often a lot healthier in terms of mindset to allow ourselves to eat the food that we enjoy.

But in moderation and as part of a balanced diet.

What about mega low calorie diets?

There is a big move at the moment to try and reduce the overall obesity epidemic across the country. There is a recent approach to try an 800 calorie a day diets for people who are obese or morbidly obese.

This is a very specific intervention that can help people who are significantly overweight. Eating an 800 calorie diet, over three weeks is going to be very, very tough for most people.

With the help of professionals it can work, it might kickstart your weight loss, but it’s not a long term solution.

It does really depend on your own situation and how much weight you are aiming to lose.

Eating such a low calorie diet is a targeted intervention done under the care of professionals who understand how to reduce intake whilst also maintaining sufficient fibre sufficient protein and all the different nutrients that we need.

Low Fat Diets don’t work

When you go on a diet eating typical low fat dieting foods you might feel very tired.

Now of course we need to go into a calorie deficit when we’re trying to lose weight. And fat has more calories than carbs or protein, so it seems like an easy win.

You won’t lose weight unless you are burning more calories than you’re taking in.

However, if you’re not eating any fat or you’re not eating enough protein, you’re not having enough fibre, for example, you will start to feel hungry.

Coping with your busy life and managing your day to day responsibilities for family, work and exercise is extremely difficult if you’re hungry.

Maybe you’ll start snapping at the kids, or struggle to concentrate on that report you need to write.

When we’re eating low fat foods, low calorie foods, you might not be feeling full or satisfied with the meals that you’re eating.

What I teach people is how to have a balanced healthy diet. A diet that really hits all of those nutritional kind of goals that we need, as well as trying to lose weight, and it is a long term solution.

And it’s not something that can be done overnight, if we want to change our habits for the good.

Effects of yoyo dieting

When you go on crash diets and then you bounce back to eating quite a lot of food it can be very hard for your body to respond and adapt to processing your energy.

Teaching ourselves the healthiest way to eat over the longer term is a much more positive way to focus on weight loss,

Diet products may irritate your gut

If you’ve been part of the slimming club in the past or been thinking you need to cut down on calories you may have opted for low fat foods, products labelled low calorie or zero calorie.

And, of course, sometimes it does cut down the amount of calories in the food.

Firstly, the amount of ingredient in low fat products is normally much longer normally than the whole fat version. Because the food has been manufactured to be low fat, producers need to add in thickeners or extra salt or extra sweeteners, to try and make the food palatable.

Sometimes these are not as healthy for us as we think they are. Just because a foods is labelled low fat or sugar free doesn’t mean necessarily that it’s healthy.

But the other added complications with this is that sometimes the additions, e.g a thickener or like a sweetener might actually be triggering IBS symptoms.

So perhaps you find you switch over to the diet foods, and then suddenly your IBS is getting worse, you’re getting bloated.

And that makes you feel like you’re not losing weight because your tummy feels big.

Or just you’re getting a lot of constipation or diarrhoea or just loads of excess gas. Those kind of symptoms of irritable bowel syndrome can be triggered in people who are sensitive to these artificial sweeteners thickeners those kinds of things.

Do artificial sweeteners help dieting?

If we cut out sugar and rely on diet products sometimes we can compensate for high levels of sweetness in foods because we feel like, ‘oh well we’re being good’ and we’re having the diet drink so actually, it’s okay to have the cake.

So maybe you actually kind of add snacks or ‘treats’ into your diet, because you feel like you’re being good with other products.

Rewarding our brain

When we eat food containing fat chemical messages tell the brain that we’re full and we’re receiving fat and that we should stop eating.

When we eat food that doesn’t reward us in the same way, because there is no fat in your diet, we won’t get those messages back to the brain.

And this may actually increase your appetite because your chemical satiety signals like that tell us before we’ve had enough to eat, or not being activated in the same way.

If we’re only partially satisfied with food, then we are more likely to eat more later on.

Try to eat food in its most natural form as whole or close to the origin as possible. So things like eating fruits fresh fruits, vegetables, meat, rather than ultra processed food that have been really manufactured and created.

Typical dieting foods may be trigger your IBS

Eating more about vegetables, whole grains things that I would typically recommend to people who want to lose weight may increase IBS symptoms.

Read my recent blog about this here: Why IBS makes weight loss hard

It’s a very individual reaction to these kinds of foods and something that you will need to work out for yourself. But, I can help you do that and help you work out what types of foods are triggering your symptoms.

If you’re ready to start a weight loss journey, and you have IBS contact me. 

There are lots of ways to tackle and IBS diet, we can run stool tests, and work on elimination diets to find what works for you. Send me a message to get started.

Hi I'm Anna Mapson, registered Nutritionist (mBANT, CNHC). I specialise in all things ‘digestive health’ and I help people with their IBS symptoms.

I can help you to:

  • track your symptoms in a really simple but meaningful way to understand them better
  • rebalance your digestive system
  • access group support to make long lasting changes to your digestive health

“Anna is amazing! I feel totally transformed"

To find more about out how I work and how I’ve helped people just like you, see my IBS Diet support page