zlacker

[parent] [thread] 30 comments
1. ChadNa+(OP)[view] [source] 2026-01-13 02:30:43
Wow, it's hard to think of a better example of a correlational study measuring something that would obviously be confounded by the thing being studied. Don't forget that most GLP-1 users are obese and many will continue to be after treatment (as it only causes a reduction in 10%-20% of body weight). And they're rich. So the headline is "rich obese people spend more in restaurants than average".

No shade on people taking the drug btw. I'm on tirzepatide myself.

replies(2): >>fireca+A >>phil21+Y6
2. fireca+A[view] [source] 2026-01-13 02:38:17
>>ChadNa+(OP)
Do we know what the reason is for the limits of around 10-20%?
replies(2): >>hsudue+B3 >>rootus+C3
◧◩
3. hsudue+B3[view] [source] [discussion] 2026-01-13 03:09:24
>>fireca+A
As you lose weight, your body needs fewer calories to run. That “needed amount” keeps dropping with your size, until it eventually equals what you’re eating on the medication. At that point you’re no longer in a deficit, so weight loss slows or stops.
replies(1): >>double+55
◧◩
4. rootus+C3[view] [source] [discussion] 2026-01-13 03:09:31
>>fireca+A
I don't know that there's a consensus on what the limit really is. Semaglutide is good for about 15%, tirzepatide about 20%, and retatrutide about 25%. Some people don't get that much, some people get a lot more. Personally, tirzepatide got me just over 35%. I never got anywhere near max dose, either, I am what is colloquially referred to as a super responder.
replies(2): >>vladgu+Ma >>jagged+Ai
◧◩◪
5. double+55[view] [source] [discussion] 2026-01-13 03:27:39
>>hsudue+B3
That is true but requires some extra assumptions to explain why people don't keep losing weight - because the strongest influence on most people's appetite in the short run is how much of a deficit or surplus they're currently in. Thus as TDEE drops, so does hunger.

In "setpoint theory" there's an additional hunger drive based on whether you are below or above a given level of adiposity - your "setpoint". This is often given as an explanation for why people can't keep weight off, and is the sort of thing you'd need to posit to explain why people on GLP-1 inhibitors can't as easily get to lower levels of adiposity.

6. phil21+Y6[view] [source] 2026-01-13 03:49:30
>>ChadNa+(OP)
> as it only causes a reduction in 10%-20% of body weight

This was simply when the studies ended. Weight loss for most definitely tails off, but doesn't completely stop if you continue longer than the 18mo SURMOUNT-4[0] study went for with Tirzepatide.

I also do not know if this was patients going on maintenance dosing, staying the same, or ramping up doses to the full 15mg max dose. Would need to re-read it as it's been some time.

fwiw Tirzepatide is actually around 25% average loss vs. 20%. My anecdotal evidence from my peer group shows that the vast majority can go further than 25% (if needed) and then maintain it - but that does require significant lifestyle changes to maintain. The few who simply kept eating junk but less of it had far less drastic results.

I do consider it a performance enhancing drug for dieting due to that fact. Those that use it as one tool of many seem to do incredibly well. Those that use it as the only tool have much worse outcomes. No surprises there, but it was surprising to me how durable so far those who decided to make life changes have stuck with it now over the course of around 3+ years.

My random guess would be that if you use it to break habits and establish new ones, you tend to become a super responder. I like to tell people it was perhaps roughly 60% of my weight loss (36% or so, but I tapered off due to hitting my goal) was due to the drug, 40% due to other factors like eating better and creating new workout habits. The drug simply made it much easier than previous attempts at dieting, and the results turned into a feedback loop.

Another pet theory of mine is that if you use it to break a food addiction, you end up being able to stay on the wagon easier. This is based on other life experiences with other substances - the longer you stay off, the easier it becomes (for most) to abstain. Especially if you create new habits in their place. I no longer crave those late night taco bell runs like I once did even when (mostly) off the drug itself.

[0] https://pubmed.ncbi.nlm.nih.gov/38078870/

replies(1): >>daniel+p9
◧◩
7. daniel+p9[view] [source] [discussion] 2026-01-13 04:22:34
>>phil21+Y6
I know I will be downvoted into oblivion for this but here goes: Im sorry to be crass but if someone makes lifestyle changes after taking drugs its 100% the drugs.

Kind of tired of people taking anabolic steroids and then claiming it's a smaller part of their success or people being born rich talking about hard work whilst being on the golf course.

Just be happy that we live in a time where drugs have been painstakingly researched and move on without the ego boost. Be humble.

https://nymag.com/news/features/money-brain-2012-7/

replies(5): >>JumpCr+zc >>cortes+0e >>cthalu+4m >>roel_v+HF >>phil21+Pd3
◧◩◪
8. vladgu+Ma[view] [source] [discussion] 2026-01-13 04:40:41
>>rootus+C3
Sorry for personal questions please answer any OR none as you feel comfortable

1) How is your energy/stamina following the 35% loss

2) Have you done any dexascans/bodyspecs to measure your lean mass percentage before and after your loss

3) Did you take any steps to reduce the muscle loss?

4) with 35% loss, what BMI are you at?

replies(3): >>jagged+cj >>wincy+Hv >>rootus+vD2
◧◩◪
9. JumpCr+zc[view] [source] [discussion] 2026-01-13 05:11:24
>>daniel+p9
> if someone makes lifestyle changes after taking drugs its 100% the drugs

Multi-variate causation doesn't losslessly or deterministically reduce to a single dimension. Particularly when the causes aren't independent.

The drugs facilitate behaviour change. Changed behaviour helps the drugs work. Both done together are stronger than independently, and the strength of that interaction (and the overall effect) is mediated by other inputs.

◧◩◪
10. cortes+0e[view] [source] [discussion] 2026-01-13 05:32:16
>>daniel+p9
I think it depends on what you mean by "100% the drugs".

I don't think anyone is arguing that the outcome would 100% not happen if it weren't for the drugs, but I think it is useful to note that part of the benefit comes from the habits the drugs help you form rather than simply 100% the appetite reduction the drug produces.

replies(1): >>AuryGl+wm
◧◩◪
11. jagged+Ai[view] [source] [discussion] 2026-01-13 06:31:58
>>rootus+C3
Super responders unite, I'm down 32% and shooting for 36% before I hit maintenance. I only made it about half way up the dosage chart before I had to back off due to losing too rapidly (!!). I took a 3 month maintenance and am back to losing again, it's been life changing.

The other wild thing is general health improvement - all of my bloodwork has gone from questionable to better than standard - closer to ideal values than I would ever expect. Liver values, cholesterol, lipids, blood pressure, everything. I expected them to improve but not to the degree that they have, my LDL has gone down by 60%. Actuarial tables say it's given me another ~10 years of probable lifespan, and even more if you think in healthspan.

replies(1): >>rootus+zE2
◧◩◪◨
12. jagged+cj[view] [source] [discussion] 2026-01-13 06:38:40
>>vladgu+Ma
Not the original guy, but down 32%, for a point of comparison:

1) Amazing, like being a decade and a half younger

2) Not before, planning one in the next couple months, but I use skinfold and impedance and they say I've dropped from about 48% to ~20% as I've dropped from 272 to 186, lean mass seems maybe 5kg lower than I started with? Less lean mass loss than I expected.

3) Weight bearing exercise and medium-high protein intake (>80g/d)

4) Per above, starting BMI 37.9 -> ending BMI 25.9

replies(2): >>vladgu+io >>rootus+2H2
◧◩◪
13. cthalu+4m[view] [source] [discussion] 2026-01-13 07:09:08
>>daniel+p9
The drugs were a precondition to them being successful in the changes or seeing the level of impact be significantly increased doesn't make it 100% the drugs.

Since you brought up steroids, plenty of people take a gram of gear and look like they don't even lift. I'm not saying that someone taking anabolic steroids should act like they've worked just as hard as someone who is natural and at the same level of musculature, but good results take effort and consistency in the gym, diet, and rest of your lifestyle. You get some benefit just from being on steroids, but and there might be some genetic freak hyper-responders that blow up without any of that, but the overwhelming majority of people aren't going to look like they're a steroid user if they're not pushing themselves very hard as well, and the sheer amount of mediocre physiques from people on gear proves it.

Similarly, if someone turns their lifestyle around with the help of a GLP-1, if they change up their diet from crap to decent or good, if they move from being sedentary to exercising regularly, does the drug get 100% of the credit? Do we throw away all of the other work done?

You can both take a drug and also put in significant work that you can and should be proud of. Both things can be true.

replies(1): >>daniel+QF
◧◩◪◨
14. AuryGl+wm[view] [source] [discussion] 2026-01-13 07:13:57
>>cortes+0e
Are they really habits when they go away when you stop taking the drug?

I take a tiny dose of retatrutide for IBS (works amazingly well, btw). I’m not overweight. One week I stupidly got my injections mixed up and I took what’s still a fairly low but standard dose.

I could barely eat 1/3 of my supper. Granted, I’m sure you get used to it somewhat but it’s no small help that it’s giving you and I don’t know if it would help make new habits. The whole point of what most of us non-overweight people do is not eat despite being able to eat more, or even still being hungry. How are you learning that habit when it’s hard to eat and you stay full ridiculously long?

replies(1): >>phil21+5d3
◧◩◪◨⬒
15. vladgu+io[view] [source] [discussion] 2026-01-13 07:35:38
>>jagged+cj
these are amazing numbers -- how long did this loss take?
replies(2): >>jagged+4r >>rootus+sH2
◧◩◪◨⬒⬓
16. jagged+4r[view] [source] [discussion] 2026-01-13 08:05:08
>>vladgu+io
Just over 2 years from end to end, the majority towards the end when I finally got onto the right GLP-1 medication.
◧◩◪◨
17. wincy+Hv[view] [source] [discussion] 2026-01-13 08:53:43
>>vladgu+Ma
I also lost 35% body mass, from 318-208 today. It took from September 2024 to beginning of January 2026.

1) amazing, I can actually do things now. I didn’t realize how much I was resting and just not doing anything around the house. I managed to do my work with stimulants but that’s about it.

2) I did a scan and am currently around 110% for with 100% being the baseline for the average male my age, for my muscle mass. I did lose more muscle mass in the 230-210 loss than most of the previous, but I think that’s because I couldn’t ride my bike everywhere as it’s winter time. I had to chug protein shakes while losing weight and do physical therapy for a few body parts, especially my hip and my shoulders as they were easy to hurt. Going to the gym regularly solved this long term.

3) I guess I answered question 2

4) I’m now 27.1 BMI, although my percent body fat is only 18.9%, so I’m not concerned about the number since I have access to a body scanner and can see I’m fine. My visceral fat levels have dropped below concerning levels, which is great.

I also sleep way better, and the heartburn I thought was just a part of life went from “literally every day” to “once or twice a year, and only if I do something I shouldn’t have”.

I was also way more aggressive about just going to the dose and hit 15mg in April of 2025, and have stayed there. I might go for another 10 pounds mostly out of vanity.

replies(1): >>rootus+UF2
◧◩◪
18. roel_v+HF[view] [source] [discussion] 2026-01-13 10:37:39
>>daniel+p9
"Kind of tired of people taking anabolic steroids and then claiming it's a smaller part of their success"

Sounds like you've never taken steroids brother, and with that mindset you shouldn't, because I'll tell you that no matter how much you shoot into your muscles, if you don't put in the work in the gym, there's no way you're going to get jacked.

replies(1): >>hare2e+cN
◧◩◪◨
19. daniel+QF[view] [source] [discussion] 2026-01-13 10:39:36
>>cthalu+4m
There are studies on that that showed: Steroids WITHOUT training produced more muscle mass and strength than training without steroids. Bhasin et al., 1996 – New England Journal of Medicine

Belgian Blues dont really need to go to the gym, so it’s not really that hard to phantom.

replies(3): >>cthalu+4q1 >>ChoGGi+Un2 >>indeci+lg4
◧◩◪◨
20. hare2e+cN[view] [source] [discussion] 2026-01-13 11:42:48
>>roel_v+HF
That position does not appear to be supported by clinical evidence. [This study](https://onlinelibrary.wiley.com/doi/10.1111/dar.12433) references several studies that show that taking low (in the context of gym users) doses of steriods and not exercising is more effective at building muscle mass than strength training and not taking steroids.
replies(1): >>cthalu+Ep1
◧◩◪◨⬒
21. cthalu+Ep1[view] [source] [discussion] 2026-01-13 15:22:36
>>hare2e+cN
Steroids significantly increase glycogen/water retention in-muscle while on them and for a period of time while coming off of them. This would increase muscle size by the measures noted in Bhasin's study (the big one people reference here), but not increase the amount of actual contractile tissue. There's also a cap there - going up in dosage, going for longer, etc., is not going to continually increase overall muscle size at that rate because you've saturated the stores in the muscle for the glycogen and water.

You will gain some additional contractile tissue doing nothing on gear. The average person, if faced with the two options, will gain more actual contractile tissue opting to lift weights without gear.

You can find huge quantities of people in gyms that are on gear and look like they barely lift.

◧◩◪◨⬒
22. cthalu+4q1[view] [source] [discussion] 2026-01-13 15:24:32
>>daniel+QF
Bhasin's study is fundamentally flawed in that it sampled muscle size while they would still have inflated muscle size from increased glycogen and water retention from the steroid use and didn't use a method of measurement that compensates for it. It is not a direct comparison of contractile tissue, which is presumably what we would care about.

Belgian Blues grow that large because of a mutation with their myostatin gene. This is hardly the same method of action.

◧◩◪◨⬒
23. ChoGGi+Un2[view] [source] [discussion] 2026-01-13 18:55:57
>>daniel+QF
Your spell checker made wonder what ghosts are doing with steroids.
◧◩◪◨
24. rootus+vD2[view] [source] [discussion] 2026-01-13 19:53:10
>>vladgu+Ma
1. I feel wonderful. Things that were hard are now easy, exercise is invigorating instead of exhausting.

2. I have not. Considered it, but locally the scans are expensive and I could not convince myself what I'd do differently if I knew the numbers. My goals would stay the same.

3. I lift weights, but there's no way around it, losing a lot of weight means caloric deficit and I have definitely lost some mass. I'm trying to establish a slight caloric surplus now combined with a heavier focus on lifting-for-growth to see if I can claw back some of what I've lost. I got big enough at my largest (and I am just over 50 years old, which does not help) that now I have a little bit of loose skin on my belly, thighs, and upper arms ... I'm hoping that if I can regain some muscle that I can alleviate much of that. Otherwise I'll get a surgeon to do it.

4. Currently at 25.2. Could lose some more, but happy enough where I'm at and my test results are spectacular now, so I am no longer targeting further weight loss. I still weigh myself but I am now refocusing my definition for success in how I look and feel.

◧◩◪◨
25. rootus+zE2[view] [source] [discussion] 2026-01-13 19:57:23
>>jagged+Ai
Congratulations! It feels great, doesn't it? I was not quite pre-diabetic, but trending in that direction. Blood pressure elevated (but not quite 'high'), cholesterol and stuff in the sketchy zone. But now ... everything is really good! A1C was 4.9 at my most recent test. Cholesterol great, blood pressure ~115/70 every day now, etc. I went from what felt like a slow but steady decline through middle age and now I feel 20 years younger, the future looks not like decrepitude but way more active and exciting.
◧◩◪◨⬒
26. rootus+UF2[view] [source] [discussion] 2026-01-13 20:01:58
>>wincy+Hv
> the heartburn I thought was just a part of life went from “literally every day” to “once or twice a year, and only if I do something I shouldn’t have”.

I feel this, too. I was on Prilosec indefinitely, gastroenterologist said I have a mild hiatal hernia and that I'll probably be stuck on PPIs forever. But after losing a lot of weight, I was able to switch to occasional Pepcid instead, with Prilosec temporarily if I get tolerant to the Pepcid. The hernia won't heal itself, but taking the pressure off has really reduced the GERD symptoms.

◧◩◪◨⬒
27. rootus+2H2[view] [source] [discussion] 2026-01-13 20:06:06
>>jagged+cj
Your stats are very similar. I started at something like 274 (though my overall highest point ever was 284 a couple years ago) and now I'm down to 181. It's a huge difference, as you say it's like being 15-20 years younger. Life changing.
◧◩◪◨⬒⬓
28. rootus+sH2[view] [source] [discussion] 2026-01-13 20:07:39
>>vladgu+io
To add my own anecdata, it took me a bit over a year (September 2024 to December 2025) to lose the weight. I averaged about 1.5 pounds a week consistently.
◧◩◪◨⬒
29. phil21+5d3[view] [source] [discussion] 2026-01-13 22:15:33
>>AuryGl+wm
> How are you learning that habit when it’s hard to eat and you stay full ridiculously long?

For me? By changing my diet, understanding what "full" actually feels like, and keeping certain things I know I will binge eat out of the house. Plus the knowledge that I can have a bad day or two and get right back on the horse of healthy eating and be totally fine - if I gain a couple pounds I know precisely how to take them off in a repeatable and successful manner. That mental bit is key.

But for food itself - it's eating differently. Basically avoiding carbs and sugars does 90% of the work. It's not a 100% cutting out of my diet like Atkins, but it's prioritizing lean proteins and then simply being fuller for longer.

And part of it is learning you can be hungry for a period of time and not indulge. Which is much easier when you don't have those snacks you can't resist in the house.

It's certainly nothing groundbreaking, but habits are built over time. Motivation fades. I'm certainly not motivated every day or week or even month to eat well - but now it's habit and routine so it's almost more difficult to break it to go to the store to buy junk, or decide to order take out.

Going to the gym on a regular strict basis? I'm not exactly sure what changed. Likely being able to look in the mirror and feel a little vain? And knowing now it's all just about consistency. If I miss a day, just make it up the next day and stay on schedule. No big deal.

All those things stayed roughly the same after I came off Tirzepatide and hit my goal weight. They became harder of course, and I had some rebound (I overshot where I wanted to be on purpose on advice from my doctor) weight gain like most do - but I've now been stable at a healthy weight for over 18mo now. Habits have continued and stuck in place.

◧◩◪
30. phil21+Pd3[view] [source] [discussion] 2026-01-13 22:18:20
>>daniel+p9
It might be 100% the drugs, but just watching my friend group I can say it takes something more than the drugs to change habits.

I'm not offended by the suggestion. It just doesn't make logical sense based on first person evidence. Those who change up their routines seem to (so far, at least) be having much longer and durable success. Taking the drugs absolutely allowed them (and myself) to do so, but it doesn't explain why others did not and the nearly perfect correlation between outcomes.

It could simply be luck I suppose? I'm not sure what other explanation could explain differing outcomes.

The thing is - I honestly don't care. If I return to old habits again and the drugs get me off those, great. I'll take it for life. It's not a moral issue to me, it's a practical one. When friends of friends come to me for advice, I will continue to tell them that it's most effective if you use it as a means to performance enhance your dieting and then use that space and motivation from the results to change your lifestyle habits that got you there to begin with. It's simply what seems to work at a pragmatic level.

Telling someone "don't worry, the drugs are going to change your grocery shopping decisions, get you walking on a daily basis, and get you into a consistent gym routine 100% on your own" seems rather silly. I can't see how it's helpful to anyone. It sets far more people up for success if they also put effort into change from their end as well.

Re: Steroids - those who work out while on them are going to see larger gains than those who don't. They are called performance enhancing drugs for a reason, same as I think of the GLP-1 drugs - just in a different category. You certainly will get results with either, but they increase the results of effort put in as well.

In the end, do what works for you! The health outcomes of these drugs are amazing, and I think they will be up there with the most important medications ever invented in terms of quality of life years saved.

◧◩◪◨⬒
31. indeci+lg4[view] [source] [discussion] 2026-01-14 06:47:32
>>daniel+QF
That study was on untrained subjects. Steroids increase your baseline musculature, but only to a point.

You're not going to accidentally an Arnold by injecting testosterone and sitting on the couch every day.

[go to top]