04-08-2025
New ‘crucial' fat jabs guidance issued for the NHS – are you affected?
Hundreds of thousands of Brits take the injections
JABS UPDATE New 'crucial' fat jabs guidance issued for the NHS – are you affected?
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FAT jabs are not a 'quick fix' and patients must be followed up for at least a year to keep the weight off, the NHS watchdog has warned.
The National Institute for Health and Care Excellence (Nice) told clinics to offer more follow-up appointments and aftercare.
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2RD5P46 photo of Mounjaro Weight Loss Pen
Credit: Alamy
More than 1.5million Brits are thought to be taking weight loss injections such as Wegovy and Mounjaro.
Most are on private prescriptions where many do not receive help with diet and exercise alongside the medication.
Studies suggest people start re-gaining weight within two months of stopping the jabs, and often put it all back on within two years.
Professor Jonathan Benger, chief medical officer at Nice, said: 'Successful weight management doesn't end when medication stops or when someone completes a behavioural programme.
'The transition period after treatment is crucial.
'People need structured support to maintain the positive changes they've made.
'This new standard makes sure services provide that vital continuity of care.'
Check-ups to prevent weight regain
The standard issued to NHS clinics tells them how to look after patients taking weight loss injections.
They must get action plans for staying healthy at home and at work, have regular check-ins and have community support available.
Dr Rebecca Payne, head of standards at Nice, said: 'Weight management is a long-term journey, not a short-term fix.
'The evidence is clear that advice and support for maintaining weight after stopping medicines can help prevent weight regain.'
Sun Health Explainer: Fat jabs
Everything you need to know about fat jabs
Weight loss jabs are all the rage as studies and patient stories reveal they help people shed flab at almost unbelievable rates, as well as appearing to reduce the risk of serious diseases.
Wegovy – a modified version of type 2 diabetes drug Ozempic – and Mounjaro are the leading weight loss injections used in the UK.
Wegovy, real name semaglutide, has been used on the NHS for years while Mounjaro (tirzepatide) is a newer and more powerful addition to the market.
Mounjaro accounts for most private prescriptions for weight loss and is set to join Wegovy as an NHS staple this year.
How do they work?
The jabs work by suppressing your appetite, making you eat less so your body burns fat for energy instead and you lose weight.
They do this my mimicking a hormone called GLP-1, which signals to the brain when the stomach is full, so the drugs are officially called GLP-1 receptor agonists.
They slow down digestion and increase insulin production, lowering blood sugar, which is why they were first developed to treat type 2 diabetes in which patients' sugar levels are too high.
Can I get them?
NHS prescriptions of weight loss drugs, mainly Wegovy and an older version called Saxenda (chemical name liraglutide), are controlled through specialist weight loss clinics.
Typically a patient will have to have a body mass index (BMI) of 30 or higher, classifying them as medically obese, and also have a weight-related health condition such as high blood pressure.
GPs generally do not prescribe the drugs for weight loss.
Private prescribers offer the jabs, most commonly Mounjaro, to anyone who is obese (BMI of 30+) or overweight (BMI 25-30) with a weight-related health risk.
Private pharmacies have been rapped for handing them out too easily and video calls or face-to-face appointments are now mandatory to check a patient is being truthful about their size and health.
Are there any risks?
Yes – side effects are common but most are relatively mild.
Around half of people taking the drug experience gut issues, including sickness, bloating, acid reflux, constipation and diarrhoea.
Dr Sarah Jarvis, GP and clinical consultant at said: 'One of the more uncommon side effects is severe acute pancreatitis, which is extremely painful and happens to one in 500 people.'
Other uncommon side effects include altered taste, kidney problems, allergic reactions, gallbladder problems and hypoglycemia.
Evidence has so far been inconclusive about whether the injections are damaging to patients' mental health.
Figures obtained by The Sun show that, up to January 2025, 85 patient deaths in the UK were suspected to be linked to the medicines.
