- Provides critical protein and fibre
- Helps avoid malnutrition
A Guide to Weight Loss Injections in the UK
Taking a weight loss jab like Ozempic? The Fast 800 can help!
The Fast 800 Programme is compatible with weight loss injections to help you lose weight and keep it off.
Photograph: Lezli + Rose
Have you heard of Dr Mosley’s 'Ozempic Diet'?
For those using weight loss injections like Ozempic and Mounjaro, Dr Michael Mosley and his son, Dr Jack Mosley, recommend a programme like The Fast 800 to:
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Ensure you get adequate protein and fibre, which mitigate detrimental side effects of these medications
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Help you establish sustainable habits to keep weight off
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Avoid malnutrition by giving you nutritious recipes and meal plans to suit a reduced appetite
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Give you simple resistance exercise plans to ensure you don’t lose muscle mass
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Ultimately, keep the weight off long-term, even after you stop using the injections
What experts really think about drugs like Ozempic
“Using these drugs can be effective at helping you lose weight in the short term. But if you want to keep the weight off long term, then I would suggest that you’re going to need to incorporate a lot of the things we help you with on The Fast 800. There has also been lots of evidence that when you stop taking the drug, hunger returns and the weight goes back on. If you’re using one of these drugs, combining it with The Fast 800 Programme gives you the best of both worlds, in the sense that they will help suppress appetite, but you do really, really need a programme, like The Fast 800, to change the habits that are critical for long-term health.” – Dr Michael Mosley
How weight loss injections work
The weight loss medications most people, and the media, are referring to these days refer to a group of drugs classed as GLP-1 Receptor Agonists. Brand names you might have heard in this group of drugs include Saxenda, Wegovy, Mounjaro and Ozempic.
How they work
They mimic the hormone called glucagon-like peptide-1 (GLP-1), resulting in a reduced appetite, fewer cravings and delayed stomach emptying.
What they cost
Most patients at the moment will need to fund their medications themselves, usually around £150 a month.
What if you stop?
Your body returns to its usual rhythm and appetite, so if you haven’t established sustainable healthy eating or lifestyle habits, it’s very likely that you will put weight back on.
What your doctor wants you to know
What Dr Patrick Garratt, a GP with over 20 years’ experience and a special interest in diabetes and weight loss, wants people to know if they’re considering using weight loss injections like Ozempic and Mounjaro:
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These medications are currently injectable only
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Discuss the side effects with your practitioner
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Adopt a diet high in protein, fibre and healthy fats maintain lean muscle mass
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GLP-1s are not a fix-all solution, they require a focus on diet and exercise
Try the Programme for free
Sign up today and your 7-day free trial begins immediately. Week 1 of your programme will start on: Monday 28th April
Wondering what to eat?
The Fast 800 Nutritionist shares her top tips for people using weight loss injections
Get variety with a Mediterranean-style diet
Skip ultra-processed foods
- They’re high calorie, low nutrition
- Best to reach for whole foods
Ditch the sugar
- Rapid sugar spikes reduce medication effectiveness
- Whole fruits instead provide fibre and vitamins
Eat mindfully
- More likely to choose healthy foods
- More likely to enjoy food
Eat at least 3 hours before sleep
- Reduces acid reflux
- Helps digestion
Use a tool like The Fast 800
- Meal plans and recipes done for you
- Low calorie, high nutrition
Pawel's sustainable weight loss
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Lost 63kg
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Pre-diabetes into remission
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Used programme alongside weight loss medication
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Blood pressure improved
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Stopped snoring
The Fast 800 is compatible with Ozempic and Mounjaro
“You might be thinking that GLP-1 drugs are an alternative to The Fast 800, but I would say they’re actually complementary.” – Dr Michael Mosley
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850+ recipes high in fibre and protein
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Meal plans with nutrient-dense, low-calorie recipes
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Support from our qualified Health Coaches
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Dedicated Community support group
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Exercise plans to help you maintain muscle
Frequently Asked Questions
Is there a 'The Fast 800 Ozempic diet'?
The Fast 800 does not supply weight loss injections. However, our weight loss programme can support anyone taking medication like Ozempic, Mounjaro or Wegovy by providing low calorie meal plans, high in both protein and fibre to help maintain muscle mass and prevent malnourishment.
Does the diet work without weight loss injections?
Absolutely! Many of our programme members lose weight naturally with The Fast 800 Programme alone. See our success stories.
Will The Fast 800 help with food noise?
You may have heard of food noise from Dr Jack Mosley’s latest book. The Fast 800 programme can help minimise food noise – the constant, unwanted thoughts about food – by supporting you to eat well and build healthy habits.
Is this 'Dr Mosley’s Ozempic diet'?
The Fast 800 is an established programme to help members lose weight and keep it off following a low calorie diet that prioritises protein, fibre and healthy fats. It’s designed to help you stay nourished while losing weight and was created by Dr Michael Mosley and a team of doctors and nutritionists. While the programme does not supply weight loss injections, it can be used to complement them and help you reduce the common side effects of taking these drugs.