Medically Reviewed Content
Written by Rob Anderson, Health Technology Researcher & Medical Content Specialist. This article is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before starting any medication.
Semaglutide is the most widely searched and most talked-about weight loss medication in history. But the questions people actually want answered go beyond the clinical data — is it worth trying? What happens long term? Is it right for your specific situation? This guide addresses all of it.
The Evidence Base: What We Actually Know
Semaglutide at 2.4mg (Wegovy dose) produces an average 14.9% body weight reduction over 68 weeks in the STEP-1 trial — the largest effect of any approved non-surgical weight loss treatment. More than one in three participants lost over 20% of their body weight. The SELECT trial showed a 20% reduction in major cardiovascular events. The ESSENCE trial showed NASH resolution. The FLOW trial showed kidney protection. The evidence base is now one of the most robust in obesity medicine.
Who Gets the Best Results
Predictors of strong response: higher baseline BMI, significant insulin resistance or prediabetes, adherence to protein-focused nutrition, regular resistance training, consistent sleep, minimal alcohol, and staying on treatment for 12+ months. People who combine semaglutide with behavioural changes consistently outperform those treating it as a passive intervention.
The Long-Term Reality
Semaglutide works for as long as you take it. The STEP-5 trial (2-year data) showed continued weight loss maintenance at 2 years. The STEP extension showed significant weight regain after stopping. This leads to the most important decision: can you treat obesity as the chronic condition it is and commit to long-term management, as you would for high blood pressure or high cholesterol? For those who can, the long-term outcomes are excellent. For those expecting a short-course cure, the expectation needs resetting.
The Cost Question in 2026
Brand-name Wegovy: $1,000–$1,400/month without insurance. Compounded semaglutide via telehealth: $149–$350/month. The availability of compounded semaglutide through licensed telehealth providers has democratised access to a treatment previously only available to those with top-tier insurance or wealth. At $149–$200/month, the cost comparison against obesity-related health conditions — type 2 diabetes management, cardiovascular events, joint replacements — becomes straightforward for most eligible people.
Is It Right for You?
Semaglutide is likely worth trying if: you have BMI 30+ or BMI 27+ with a related condition, previous diet and exercise attempts have not produced sustained results, you understand it requires long-term commitment, and you can access it at a cost you can sustain. It may not be the right timing if: you are planning pregnancy in the near term, have contraindications (MTC history, MEN2), or are not yet ready to engage with the supporting lifestyle changes that maximise outcomes.
Frequently Asked Questions
Q: Is Ozempic worth the cost?
A: For most people who are eligible, semaglutide offers a cost-effective intervention when you factor in the long-term costs of obesity-related conditions. Compounded semaglutide from $149–$350/month via telehealth makes the cost comparable to a gym membership plus meal prep. The SELECT trial showed a 20% reduction in cardiovascular events — the financial value of preventing a heart attack or stroke dwarfs the monthly medication cost. For those who have tried diet and exercise repeatedly without sustained success, semaglutide addresses the biological root cause in a way lifestyle change alone often cannot.
Q: What percentage of people respond to Ozempic?
A: The vast majority respond to semaglutide — approximately 85–90% of people achieve some degree of weight loss. Around 70% achieve at least 5% body weight loss, and approximately 50% achieve 10% or more. True non-responders (those who lose less than 5% at maximum dose) account for roughly 10–15% of users. Early response (at 12 weeks) is a strong predictor of 12-month outcomes.
Q: What happens to weight loss results after stopping Ozempic? For more details, see our weight loss projection tool.
A: The STEP extension trials showed that two-thirds of the weight lost on semaglutide returns within 12 months of stopping — without significant lifestyle changes. This is not a drug failure; it reflects the biological reality that obesity is a chronic condition requiring ongoing treatment, similar to how blood pressure medication must be continued to maintain blood pressure control. People who stop semaglutide while maintaining strong dietary habits and regular exercise regain significantly less weight than those who revert to previous patterns.
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