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When Weight-Loss Drugs Don’t Work

46 replies26 peopleMar 12, 2026☆ Follow
Summary

why do some people show no response to GLP-1 drugs like tirzepatide or retatrutide

Forum users share personal accounts of zero or minimal weight loss on these medications even at higher doses, while others cite trial data indicating roughly one in ten participants qualify as non-responders. Discussion covers differences between trial populations and the general public, dosing schedules, and switches between compounds. Several note that non-response may stem from individual biology or mental factors rather than the drug itself.

What this discussion establishesWhere people disagree

whether New York Times reporting accurately translates trial statistics to the broader population or oversimplifies them

Still open

precise biological or behavioral reasons certain individuals never respond

Nothing here is advice.

46 replies · 26 people
CopperMeadow64archiveopening postMar 12

An article suggests one in ten people show no response at all to these GLP-1 drugs. Has anyone come across someone who truly got zero effect?

SlowBramble78archiveMar 12
↳ replying to @CopperMeadow64 (opening post)

The link is asking me to make an account before I can read anything. Got another way to see it?

CopperMeadow64archiveMar 12
↳ replying to @SlowBramble78

It opened fine without any subscription on my end. Here is the same link again.

SlowBramble78archiveMar 12
↳ replying to @CopperMeadow64

Still blocked for me. I am sure you are not getting all your reading from that one paper anyway.

ClearBeacon24archiveMar 12
↳ replying to @SlowBramble78

It loaded okay here. Maybe an ad blocker or VPN is getting in the way for you.

GreyLedger40archiveMar 12

The actual study only called one in ten of the enrolled trial participants non-responders, and even then it meant weaker response rather than none. That is not the same as claiming one in ten people overall will be non-responders. Trial volunteers already had to meet strict criteria, so they probably were not typical of everyone trying to lose weight.

SteadyQuill55archiveMar 12

The link would not load for me either. I already expect the piece to say that a portion of users feel little effect and keep eating through it. Different people overeat for different reasons, so maybe the current drugs only hit the pathways that work for most but not all.

SlowBramble78archiveMar 13
↳ replying to @ClearBeacon24

I run a VPN, ad blocker, and everything else you can think of. Even my email is set up to stay hidden.

SlowLedger42archiveMar 13

Looking at the retatrutide phase-two plots, the low-dose group still had quite a few people near the zero line after nearly a year, while the highest dose group showed almost everyone losing a meaningful amount. News articles on science topics like this one tend to oversimplify, so I would not rely on them for accurate details.

SlowLedger42archiveMar 13

The 12 mg chart did not show up. Trying once more.

SlowHarbour21archiveMar 13
↳ replying to @CopperMeadow64 (opening post)

Retatrutide did nothing for me even at 10 mg. Tirzepatide was the same. Adding another compound on top still left me with no hunger control. Melanotan II, though, cut my appetite right away.

CopperMeadow64archiveMar 13
↳ replying to @SlowBramble78

That paper is mainly after your subscription money.

CopperSignal27archiveMar 13
↳ replying to @SlowLedger42

Those plots are useful. On the low dose, roughly twenty percent still dropped fifteen percent or more, and a few got close to thirty percent. Even at the top dose the weakest responders lost around five percent, while many reached the high twenties. Results might look even better after more time.

PatientAlder89archiveMar 13

I thought the trials began at 2 mg.

CopperSignal27archiveMar 13

One year at the lowest retatrutide dose still gave an average nine percent loss, which beats other GLP-1s at similar levels. That could make it a reasonable choice for people who are only mildly overweight, and side effects stay mild at that amount.

SlowLedger42archiveMar 13
↳ replying to @CopperSignal27

Here is another plot that might be worth a look.

PlainAnchor67archiveMar 13
↳ replying to @CopperMeadow64 (opening post)

I began at 2 mg and went up to 7.5 mg before side effects made me stop, yet I still lost nothing. I had ramped faster than the studies recommend. After a break I restarted at 2 mg and am now following the published schedule exactly. Three weeks in I am actually a couple pounds higher. I will run bloodwork after eight weeks total. Other compounds I take might offset some side effects even if weight does not move.

CopperMeadow64archiveMar 13
↳ replying to @PlainAnchor67

Are you on tirzepatide or the other one?

SlowBramble78archiveMar 13
↳ replying to @PlainAnchor67

Keep us posted on how that combination works out. I have some of the same item arriving soon.

AmberMarble84archiveMar 13

Plenty of my patients never respond to the semaglutide we use most often here. I had the same experience myself.

PlainBeacon37archiveMar 13
↳ replying to @GreyLedger40

The article itself starts with someone who lost almost nothing after fifteen months. I have been a low responder too. Diarrhea hit at around 5 mg so I dropped to 2 mg split twice weekly and have been inching back up slowly. No weight came off for five months until an illness combined with the medication finally produced a small drop.

BrightMeadow15archiveMar 13
↳ replying to @CopperMeadow64 (opening post)

Someone claimed last year they needed 15 mg of tirzepatide before anything happened. When I asked how they mixed the vial they never answered. Variation is normal, so a few people will respond very little while others respond strongly. Starting low and slow is the safest approach since no one can predict their own outcome.

GreyLedger40archiveMar 13
↳ replying to @PlainBeacon37

I said lazy reporting, not lazy science. The point was simply that one in ten trial participants is not the same as one in ten people in general. That distinction matters and the headline blurred it. I am not questioning the study itself, only how the finding was presented.

GreenThistle75archiveMar 14

Sometimes the industry itself is the one doing the sloppy reporting, as shown by recent FDA warnings about missing safety data.

WarmMeadow92archiveMar 14
↳ replying to @GreyLedger40

I checked the enrollment rules for one major trial and they were stricter than I recalled, mainly to keep participants healthy and avoid confounding conditions. That helps the results stay valid, but it still leaves open how well they apply to everyone outside those criteria.

SlowLedger42archiveMar 14
↳ replying to @GreyLedger40

I agree the reporting often frames things narrowly, yet the core statistical point stands. Companies have clear incentives to shape trial groups in ways that improve apparent outcomes.

GreenAnchor23archiveMar 14
↳ replying to @CopperMeadow64 (opening post)

So that would still be a ninety percent success rate, which sounds fairly good.

QuietAnchor73archiveMar 14
↳ replying to @SlowBramble78

A bit late, but here is a saved copy of the article.

QuietAnchor73archiveMar 14
↳ replying to @SlowHarbour21

That compound is noted for reducing appetite through a specific receptor tied to energy balance. Interesting connection.

GreyLedger40archiveMar 14
↳ replying to @WarmMeadow92

Thanks for the reply. The tables showed an average age around forty-eight with a spread that included younger adults, and BMI values that were not all extremely high. My earlier comment was only about the wording that turned a trial statistic into a claim about people in general.

WarmMeadow92archiveMar 15
↳ replying to @GreyLedger40

The average age was about forty-eight with a standard deviation that put most participants between roughly twenty-three and seventy-four. BMI spread was similar. The headline still used the broad word people instead of patients or participants, which is the part I keep coming back to.

BlueAlder28archiveMar 15
↳ replying to @AmberMarble84

Same here with semaglutide. I actually gained weight on it. Dosing equipment can also be off, which might explain some disappointing results.

GreyLedger40archiveMar 15
↳ replying to @WarmMeadow92

That cleared up several things for me. Appreciate it.

WarmMeadow92archiveMar 15
↳ replying to @GreyLedger40

The studies I have read were run carefully, and the lead investigator has strong statistical training. Using patients instead of people in the headline would have avoided the overgeneralization.

GreyLedger40archiveMar 15

I am glad the explanation helped. I come here to pick up details from people who have dug into the data.

PlainBeacon37archiveMar 17
↳ replying to @GreyLedger40

I wanted to say sorry. I misread what you wrote last week and you were right.

GreyLedger40archiveMar 17
↳ replying to @PlainBeacon37

No problem. Turns out I was off on a couple of details too, as others pointed out. Group hug?

AmberCinder46archiveMar 17

I am moving from tirzepatide split dosing over to retatrutide. Appetite control dropped noticeably mid-week after the first swap, so I am increasing the new dose gradually. No negative effects so far. Anyone else made this switch and how did it go?

SharpCinder28archiveMar 18

Side effects at higher doses are the real limit for me, and retatrutide brings its own. People switching often push the new dose too fast or drop the old one too soon. Since you have had no issues yet, you are probably on a good path.

CopperSparrow86archiveMar 22

These drugs never helped me drop weight. Keto alone worked faster and felt easier. What the medications did do was make gaining harder. I still hit long stalls no matter what I eat, and the only way I seem to lose anything is by cycling carbs on and off, which brings its own problems with hunger and sleep.

CopperMarble87archiveMar 23
↳ replying to @CopperMeadow64 (opening post)

I think part of it is mental readiness. Some people are not in the right headspace yet to make the changes stick.

SlowLedger42archiveMar 23
↳ replying to @CopperSparrow86

Results from mixing keto with these drugs seem mixed. Did you try keto again after your body had more time to adjust to the medication?

SharpCompass19archiveMar 31
↳ replying to @AmberCinder46

One person I know got almost no effect from tirzepatide up to 10 mg and felt no hunger reduction. After switching to a low dose of retatrutide she now stops eating halfway through a meal because she feels full.

WarmSparrow81archiveApr 1
↳ replying to @CopperSparrow86

Sorry to hear that. Have you checked thyroid levels or other labs to rule out other issues?

PatientTimber93archiveMay 10
↳ replying to @CopperMeadow64 (opening post)

My husband had zero reaction to semaglutide, even at 1 mg. He only felt tired and lost nothing.

PatientHarbour23archiveMay 11
↳ replying to @CopperMeadow64 (opening post)

I know someone who got nothing from semaglutide but later responded to tirzepatide.

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When Weight-Loss Drugs Don’t Work · ZyraTrack Community