A MUM has shed almost 5st in five months thanks to Mounjaro – and revealed it’s not only her clothing size that’s reduced.
Lucy, 37, started taking the weight loss jab in February when she tipped the scales at 16st 10lb.

Lucy was a size 22 and weighed in at 16st 10lb before Mounjaro[/caption]
The mum has now lost almost 5st[/caption]
The mum of three, from Greenock, Invercylde, now weighs just 11st 13lb.
She’s even managed to avoid the loose and saggy skin that has plagued other Mounjaro users thanks to a regular exercise regime.
And she no longer craves greasy takeaways or junk food.
Lucy – a full-time carer for her children, two of whom have additional needs – told Fabulous: “I had been trying to lose weight for years, but struggled to lose more then 10lbs.
“At Christmas it reached the point I was a size 22 and clothes were tight. This is when I started doing research on Mounjaro as I had seen online amazing results.
“I didn’t have a specific target weight. I wanted to be a size 12/14 but I have no desire to be really skinny as I do like being curvy.
“I am very open and everyone knows I am on Mounjaro, a lot of my friends are too. And we support each others journeys.”
Mounjaro, which is known as the King Kong of weight loss jabs, works by suppressing the appetite and making people feel fuller for longer.
Such injections are licensed for patients with type 2 diabetes and to assist those who are clinically obese – with a Body Mass Index of 30 or over.
One jab is administered each week but the duration is dependent on a person’s weight.
The drugs can be lawfully supplied only when prescribed by a practitioner – like a doctor, nurse or a pharmacist-independent prescriber.
Recalling her journey so far, Lucy said: “I perhaps didn’t do what most people do and move up doses every four weeks.
“I stayed on the starting dose of 2.5mg for 17 weeks and lost it slow and steady.
“I attempted the 5mg but I didn’t like the amount of suppression it gave, I could barely eat, and that’s not the mindset I want.
“I want to have slight suppression so that I am making my own choice what to eat.
“I am back on the 2.5mg and using it as a maintenance dose, but do plan to stop after the summer holidays and maintain on my own.”

Lucy has managed to avoid loose and saggy skin during her weight loss[/caption]
She hails her ‘slow and steady’ approach for being so successful in her Mounjaro journey[/caption]
She added: “Since losing all the weight my relationship with food is completely different.
“Anything greasy turns my stomach, I have attempted a Chinese and I was sick after it, so have completely avoided takeaways.
“I don’t miss any snacks and treats, I just don’t think about food as much.
Shoe knew?
Lucy documents her Mounjaro journey on TikTok (@senmum.on.a.lossjourney) where she is very honest about her mindset and progress.
While she says her experience has been overwhelmingly positive, she has had side effects including sickness and sore heads.
She was also forced to chop her locks into a bob and start taking vitamins due to hair loss.
But it’s a lesser-known side benefit that left her stunned on her weight loss journey.
What to do if you lose too much weight too quickly whilst on Mounjaro
IF you’re losing too much weight too quickly while on Mounjaro, it’s important to take action to avoid potential health risks like muscle loss, malnutrition, dehydration, and fatigue. Here’s what you can do:
Evaluate Your Caloric Intake
Mounjaro reduces appetite, which can make it easy to eat too little. If you’re losing weight too fast (more than two to three lbs per week after the initial adjustment period), try:
- Tracking your food intake to ensure you’re eating enough calories (apps like MyFitnessPal can help).
- Increasing protein intake to preserve muscle mass (aim for 0.6–1g per pound of body weight).
- Adding healthy fats and complex carbs (e.g., avocados, nuts, whole grains) for balanced energy.
Adjust Your Dosage (With Doctor’s Approval)
If your weight loss is too rapid or causing side effects, your doctor may:
- Pause dose increases or lower your dosage.
- Adjust your treatment plan to stabilise your weight loss.
Strength Training & Exercise
To prevent muscle loss:
- Incorporate resistance training at least two to three times per week.
- Stay active with low-impact exercises like walking or yoga.
Hydrate & Manage Electrolytes
- Drink enough water (Mounjaro can reduce thirst).
- Electrolytes matter – Consider adding magnesium, sodium, and potassium if you feel weak or fatigued.
Monitor for Malnutrition & Deficiencies
Rapid weight loss can cause vitamin/mineral deficiencies (especially B12, iron, and electrolytes). If you experience:
- Fatigue, hair loss, or dizziness, ask your doctor about supplements.
Consider Further Medical Guidance
If your weight loss is excessive or causing health concerns, speak with your healthcare provider.
They might adjust your dosage, diet, or exercise plan to help stabilise your weight loss.
“My shoe size has changed which is bizzare”, she revealed.
“My feet have got skinnier. I usually wear a size six but I have found recently my trainers feel a bit loose on me.”
And it turns out she’s not alone, as her revelation sparked similar admissions from other Mounjaro users.
One said: “I’ve came down a whole shoe size lol ! It’s not just you.”
A second wrote: “Started my weight loss journey at 26st 11 I was a size 7. I’m now 11st and a size 4.5/5.”
“Yep, I’ve gone from a 5 to a 4.5. Bought shoes today”, revealed a third.
A fourth added: “I’m 25kg down since January and I’ve gone from a size 7 to a size 5.5.”
Meanwhile, a fifth chimed in: “I went down a shoe size after I lost 6 stone! it’s definitely a thing.”
For anyone considering Mounjaro, Lucy recommends a “slow and steady” approach and guzzling down at least two litres of water a day.
She continued: “Don’t move up doses to quickly, fast weight loss can trigger other health issues. Slow and steady worked great for me.
“And once you hit your target weight, try not to keep setting new targets. You don’t want to develop an unhealthy relationship with your body.”