The UK's most complete GLP-1 guide
Every Question Answered. Every Side Effect Explained.
- How GLP-1 medications work
- Mounjaro vs Wegovy compared
- Injection instructions
- Side effects & solutions
- What to eat on treatment
- FAQs answered
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Is Sweet Potato Good For Weight Loss?
Sweet potatoes can support weight loss when eaten in moderation as part of a calorie-controlled diet. They're nutrient-dense, high in fibre, and have a lower glycaemic index than regular potatoes, which means they release energy more slowly and help you feel fuller for longer. However, portion size matters — like all carbohydrate foods, weight loss requires a calorie deficit overall. Sweet potatoes work best alongside other healthy habits, physical activity, and sustainable eating patterns that support weight management in the UK.
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Enter your height and weight below. Supports both imperial (stone & lbs) and metric (kg). Results include NHS category, healthy weight range, and ethnicity adjustments.
What Is BMI and Why Does It Matter?
Body Mass Index (BMI) is the most widely used screening tool for assessing whether your weight falls within a healthy range. Used by the NHS, GPs, and weight management services across the UK, BMI provides a quick snapshot of your weight relative to your height. The formula is simple: your weight in kilograms divided by your height in metres squared (kg/m²).
While BMI isn't a perfect measure — it doesn't account for muscle mass, bone density, or fat distribution — it remains the standard first step in identifying potential weight-related health risks including type 2 diabetes, cardiovascular disease, high blood pressure, and certain cancers.
The NHS also recommends adjusted thresholds for people of South Asian, Chinese, or Black African heritage — a BMI of 23 or above is classified as overweight, and 27.5 as obese. Our calculator includes this adjustment as a one-click toggle.
Nutritional Benefits of Sweet Potatoes for Weight Loss
Sweet potatoes offer several nutritional advantages when managing your weight. One medium sweet potato (around 100g) contains approximately 86 calories, 20g of carbohydrates, 3g of fibre, and virtually no fat. The fibre content is particularly beneficial — it slows digestion, helps stabilise blood sugar, and increases satiety, meaning you feel satisfied longer after eating.
- Low glycaemic index: Sweet potatoes rank lower on the GI scale than white potatoes, causing a slower rise in blood sugar and reducing hunger spikes
- Rich in vitamins and minerals: They contain beta-carotene, vitamin C, potassium, and manganese — nutrients your body needs during weight loss
- High in resistant starch: When cooked and cooled, sweet potatoes develop resistant starch, which acts like soluble fibre and may support weight management
The key to weight loss is maintaining a calorie deficit — losing weight requires consuming fewer calories than you burn. The NHS recommends losing weight at a rate of 0.5 to 1kg per week for sustainable results. Sweet potatoes can absolutely fit into this approach if portion-controlled, but they're not a weight loss solution on their own.
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How It Works
Three simple steps to understand your weight and take action.
Enter your height and weight in our free calculator. Get your BMI, NHS category, healthy weight range, and ethnicity-adjusted thresholds instantly.
If your BMI suggests you're overweight or obese, explore our GLP-1 calculators to project potential weight loss on Mounjaro or Wegovy.
Use our progress tracker to log your weight weekly, visualise your journey with charts, and stay motivated — all stored privately in your browser.
Free Weight Loss Tools & Guides
Everything you need to understand your weight, explore medication options, and track your progress — completely free.
How to Include Sweet Potatoes in Your Weight Management Plan
To use sweet potatoes effectively for weight management, focus on portion control and preparation method. A single medium sweet potato makes a reasonable addition to a balanced meal — pair it with lean protein (chicken, fish, tofu) and non-starchy vegetables to maximise satiety without excess calories. Avoid deep frying or loading with butter and sugar; instead, bake, steam, or boil them. Track your portions using standard measurements or a kitchen scale to understand how sweet potatoes fit within your daily calorie target.
Remember that individual weight loss results vary. Some people find that adding nutrient-dense foods like sweet potatoes helps them stick to healthy eating habits long-term, whilst others prefer different carbohydrate sources. Your GP or a registered dietitian can help you build a personalised eating plan. Use our free BMI calculator above to understand your current weight status, and try our GLP-1 weight loss calculator if you're interested in exploring prescription weight loss medication options — both tools can help you set realistic goals.
- Dual GIP/GLP-1 receptor agonist
- Up to 22.5% body weight loss (SURMOUNT-1)
- Weekly injection, dose escalation over 20+ weeks
- Available via private prescription in the UK
- Doses: 2.5mg → 5mg → 7.5mg → 10mg → 12.5mg → 15mg
- GLP-1 receptor agonist
- Up to 15–17% body weight loss (STEP trials)
- Weekly injection, 5-step dose escalation
- NHS & private prescription available
- Doses: 0.25mg → 0.5mg → 1mg → 1.7mg → 2.4mg
Mounjaro vs Wegovy: Head-to-Head
A side-by-side comparison of the two most popular GLP-1 weight loss medications available in the UK.
| Feature | Mounjaro | Wegovy |
|---|---|---|
| Drug class | Dual GIP/GLP-1 agonist | GLP-1 agonist |
| Active ingredient | Tirzepatide | Semaglutide |
| Avg. weight loss | 15–22.5% | 12–17% |
| Key trial | SURMOUNT-1 (2022) | STEP 1 (2021) |
| Max dose | 15 mg weekly | 2.4 mg weekly |
| Escalation period | 20–32 weeks | 16–20 weeks |
| Administration | Weekly injection (pen) | Weekly injection (pen) |
| NHS availability | Private prescription only | NHS & private |
| Approx. private cost | £150–£250/month | £150–£300/month |
| Common side effects | Nausea, diarrhoea, constipation | Nausea, vomiting, diarrhoea |
Data sourced from SURMOUNT-1 and STEP 1 clinical trials. Costs are approximate and vary by provider. Always consult a prescriber.
Am I Eligible for Weight Loss Medication?
In the UK, eligibility for GLP-1 weight loss medications like Mounjaro and Wegovy is based on your BMI and overall health profile.
- BMI of 30 or above (obese)
- Age 18 or over
- No contraindicated conditions
- Committed to lifestyle changes
- BMI of 27 or above
- Plus type 2 diabetes
- Or high blood pressure
- Or obstructive sleep apnoea
Use our BMI calculator to check whether your BMI falls within the eligible range.
How We Built These Tools
Every calculator and guide on myweightcheck is built with accuracy and transparency in mind. Our BMI calculator uses the standard WHO formula with NHS-aligned category thresholds. Our GLP-1 projections are modelled on published clinical trial data from SURMOUNT and STEP studies.
All data stays on your device. We don't require sign-ups, and we don't store your health information on any server. Your progress tracker saves data locally in your browser using localStorage, so only you can see it.
We're based in the UK and our tools are designed specifically for UK users — supporting stone & lbs by default, referencing NHS guidelines, using NICE-approved medication data, and linking to GPhC-registered pharmacies.
Frequently Asked Questions
Common questions about BMI, weight loss medications, and our free UK tools.
How many calories are in a sweet potato?
A medium baked sweet potato (around 100g) contains approximately 86 calories, 20g carbohydrates, and 3g fibre. Portion size affects your total calorie intake — weigh or measure your portions to track accurately within your daily target for weight management.
Can I eat sweet potatoes on a low-carb diet for weight loss?
Sweet potatoes are moderate in carbohydrates, so they're better suited to balanced or Mediterranean-style diets than strict low-carb approaches. They can fit into lower-carb eating if portions are carefully controlled — pair with protein and vegetables, and track your intake using our free weight converter and BMI calculator.
Are sweet potatoes better than regular potatoes for weight loss?
Sweet potatoes have a lower glycaemic index and slightly higher fibre content than white potatoes, making them marginally better for blood sugar stability and satiety. However, both can be part of a weight loss plan if portion-controlled. The real factor is total calorie intake, not the potato variety.
Do I need to count sweet potatoes in my calorie target?
Yes — all foods, including sweet potatoes, contribute to your daily calorie intake. The NHS recommends a 500-calorie deficit for sustainable weight loss of approximately 0.5kg per week. Track portion sizes carefully to understand how they fit into your personal weight management plan.
Can sweet potatoes help with weight loss alongside Mounjaro or Wegovy?
Yes, sweet potatoes can be part of a healthy eating plan alongside prescription weight loss medication. They're nutrient-dense and support satiety. However, weight loss medication works best alongside reduced-calorie diet and physical activity — always follow your prescriber's dietary guidance, and consider consulting a dietitian for a personalised plan.
Ready to take control of your weight loss journey?
Start with a free BMI check, explore your GLP-1 options, or begin tracking your progress today. No sign-up. No cost. Just results.