GuidesPlain answers

Every real way to lose weight, compared

Lifestyle change, this medication class, the older medications, and surgery: what each actually delivers according to the trials, what each costs, and who each is honestly for.

10-minute read · Updated August 2026 · Based on the Conduit clinical protocol

Why this comparison is rarely written honestly

Everyone selling one path has a reason to shade the others. Surgeons write that medication is temporary. Medication programs write that surgery is drastic. Diet companies write that both are shortcuts. Each claim contains a grain of truth and a commercial motive.

We sell one of these paths, so read us with the same skepticism. What follows is the trial data for all four, with sources, and an honest sentence about who each one fits. Where our option is the wrong fit, this page says so.

The four paths, side by side

Average results from the landmark trials of each approach. Individual results vary widely in every category.

The pathWhat the trials showed
Intensive lifestyle changeRoughly 5 to 9 percent loss in year one with intensive coaching (Look AHEAD averaged 8.6 percent); regain is common as intensity fades. Free to cheap. The foundation under everything else.
GLP-1 class medicationAbout 15 percent average over 68 weeks in STEP 1; roughly a third of participants lost 20 percent or more. Works while you take it; the exit needs a plan.
Dual-agonist class medicationLow-twenties percent average in SURMOUNT-1 at the highest doses. Newer, typically pricier, physician-escalated.
Older medicationsPhentermine and orlistat average roughly 3 to 9 percent. Cheap, decades of history, real side-effect trade-offs, and appropriate in specific situations a physician can identify.
Metabolic surgeryRoughly 25 to 30 percent, the most durable in long-term data (Swedish Obese Subjects study). An operation, with an operation’s risks, recovery, and permanence.

Reading the table cold: surgery moves the most weight, the new medication classes are the largest change in a generation for the middle ground, lifestyle is the multiplier on every row, and the older medications still have niches.

Who each path honestly fits

Lifestyle alone fits people with smaller amounts to lose, strong routines, and the appetite biology that cooperates. It is also not optional for anyone on the other paths; medication and surgery both work dramatically better on top of real habits.

GLP-1 class medication fits the person whose appetite biology keeps winning the willpower fight: the food noise, the 9pm pull, the regain after every diet. That is most people who have dieted seriously and watched it come back.

Surgery fits larger total losses, urgent metabolic disease, or the person for whom medication proved insufficient. It deserves a surgeon’s consultation, not a paragraph, and a good telehealth physician will say so to the right candidate.

The combination nobody markets

The strongest evidence points at combinations: medication or surgery to change the biology, habits to hold the result, and a maintenance plan for the long tail. Any program that frames one path as the whole answer is selling its inventory, not your outcome.

Questions members actually ask

Should I try lifestyle-only first?

If you have not made a serious structured attempt, often yes, and it costs nothing to start tonight. If you have made serious attempts and watched the weight return, that history is data: your appetite biology is the obstacle, and biology is what medication addresses.

Why would anyone choose the older, cheaper medications?

Cost, availability, and specific clinical situations. They average less loss and carry their own trade-offs, but a physician who knows your case may have good reasons. Cheap and older does not mean illegitimate.

Is surgery better because it is more permanent?

It is the most durable option in long-term data, and it is still not maintenance-proof: habits and follow-up decide long-term results there too. Permanence of the anatomy is not permanence of the outcome.

Which one does Conduit sell, and when is it wrong?

We prescribe the medication path, physician-managed. It is wrong for people with the contraindications on our eligibility guide, wrong as a substitute for surgery in the situations surgery genuinely fits, and wrong for anyone unwilling to pair it with basic habit change. The physician review exists to catch all three.

Sources

  1. Look AHEAD Research Group, intensive lifestyle intervention, NEJM 2013
  2. Wilding et al., STEP 1 trial, NEJM 2021
  3. Jastreboff et al., SURMOUNT-1 trial, NEJM 2022
  4. Sjostrom et al., Swedish Obese Subjects study, NEJM 2007
  5. American Society for Metabolic and Bariatric Surgery, procedures overview

This guide is educational and is not medical advice. It restates the Conduit clinical protocol in plain language; your physician’s individual guidance always comes first. If you are experiencing a medical emergency, call 911.

The Weight Loss Protocol · from $129/moSee if you’re a fit