The Science Behind Sustainable Weight Loss

Weight loss isn’t about a quick fix. The science shows that sustainable weight loss requires gradual, safe changes, combined with professional support.

One of the most important findings in obesity research is that even modest weight loss -  around 5% of body weight - can reduce the risk of type 2 diabetes, high blood pressure, and heart disease (NICE guidance). This means sustainable progress, not rapid loss, delivers the biggest health gains.

Crash diets or unstructured attempts often fail because they don’t address long-term behaviours. NHS advice on obesity treatment emphasises that structured programmes, delivered with healthcare professional support, are more effective.

Evidence from the World Health Organization shows that regular follow-up and personalised planning are key. Programmes that combine lifestyle support with appropriate prescribing services provide the best chance of success.

Pharmacist-led programmes focus on achievable changes. For many people, this means portion control, reducing high-calorie food and drink, and building new routines gradually. With consistent monitoring and support, these changes are more likely to stick.

At foundy, our pharmacist-led weight loss services are designed to be safe and sustainable. Our Forge membership provides access to prescribing services while ensuring you’re supported at every stage.

👉 Explore how our services support sustainable weight loss.

This content is for educational purposes only and is not a substitute for professional medical advice. Always consult a healthcare professional before starting a weight loss programme.