When it comes to losing weight, sugary fizzy drinks are often the first thing GPs recommend cutting out. But what about the “sugar-free” alternatives? Are diet fizzy drinks the perfect guilt-free swap… or could they still be holding you back from your goals?
It’s a question we hear often at Midland Health, and our private GPs and weight loss specialists are here to share an informed, balanced view.
The Case FOR Diet Fizzy Drinks
- Fewer calories – Regular fizzy drinks can contain up to 140 calories per can — mostly from sugar. Diet versions are usually calorie-free or extremely low-calorie, making them an obvious way to reduce your daily intake.
- Better for blood sugar – Sugar-sweetened drinks cause rapid spikes in glucose levels. Diet drinks, made with artificial sweeteners, don’t have the same effect — which can be a positive for those with prediabetes or type 2 diabetes.
- May help during transitions – If you’re finding it hard to give up full-sugar fizzy drinks completely, diet versions can be a stepping stone towards healthier habits.
The Case AGAINST Diet Fizzy Drinks
- Not a hydration hero – Water is still king when it comes to hydration. Diet fizzy drinks — especially caffeinated ones — may contribute to mild dehydration over time.
- Possible craving effect – Some research suggests artificial sweeteners can maintain or even increase cravings for sweet foods, making it harder to break old habits.
- Overcompensation trap – People sometimes “spend” their saved drink calories on extra snacks, unknowingly cancelling out the benefits.
What Our Private GPs Recommend
Diet fizzy drinks can be a better option than full-sugar versions, but they’re best enjoyed occasionally, not as your main source of hydration. For long-term weight loss success:
- Make water or herbal tea your default drink
- Use diet drinks as a treat or transition tool, not a daily staple
- Pair smart drink choices with a balanced diet, regular activity, and — if appropriate — medically supervised weight loss support.
Where Diet Fizzy Drinks Fit into a Medical Weight Loss Plan
If you’re actively working on weight loss — whether through lifestyle changes or medical support such as Wegovy or Mounjaro — keeping hydrated with the right drinks will make a difference.
At Midland Health, we offer:
- GP-led consultations to assess your health and weight loss goals
- Prescription weight loss injections where clinically appropriate
- Specialist dietitian support to help you make realistic, lasting changes
- Regular monitoring and adjustments to keep you on track
We focus on the whole picture — nutrition, hydration, exercise, medication, and mindset. That means even your drinks are part of the plan.
Thinking about starting your weight loss journey?
Book your private GP consultation today and discover how we can help you reach your goals. Speak to a member of our friendly team on 0121 769 0999, email hello@midlandhealth.co.uk, or book online.