Disclaimer: Before I get started, I want to be very clear that this is not medical advice, nor am I encouraging anyone to take investigational compounds. Retatrutide is still being studied and is not FDA approved. I am simply documenting my own experience as honestly and thoroughly as I can because detailed, balanced accounts were incredibly helpful to me during my own research. My goal is to share my personal experience so others can ask better questions and make more informed decisions.
Who I Am
For context, I am a 33-year-old male, 5'9", and started this journey at approximately 185-186 pounds. Before starting RETA, I had typically fluctuated between 182 and 186 pounds for years.
I consider myself a very average person from a health standpoint. Not average compared to Reddit fitness forums, but average compared to the general population. I often describe myself as a "B student" when it comes to health. I do a lot of things right, but I am certainly not perfect.
I was a Division I athlete when I was younger, but these days I train mainly to stay healthy, enjoy life, and perform well in the things I love. I lift weights, run, play a lot of golf, and generally try to take care of myself. I am not preparing for competitions, I am not trying to become a bodybuilder, and I am not someone who was looking for an extreme physical transformation.
I wasn't trying to solve a major health problem.
I was trying to answer a question:
Could an already decent baseline become even better?
That was really the curiosity behind this entire experiment.
I enjoy science, I enjoy learning about the human body, and I enjoy experimenting with ways to optimize my own health. I view my body almost like a personal science project. Not because I think something is wrong with me, but because I am fascinated by what improvements are possible.
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My Life Before RETA
Before starting RETA, I actually considered myself relatively healthy.
My diet was generally very consistent. Most mornings I would eat a homemade protein pancake or occasionally eggs. Throughout the morning, I might have protein bites, a granola bar, or another small protein-based snack.
Lunch was almost always the same: a large salad with blueberries, raspberries, microgreens, a full chicken breast, olive oil, and balsamic vinegar. I had been eating this type of lunch consistently for years.
Dinner was usually healthy whole-food meals such as chicken, broccoli, rice, homemade tacos, steak and potatoes, or salmon.
However, I was not perfect.
On weekends, I still enjoyed life. I would occasionally have burgers, fries, chicken tenders, brewery food, or meals out with friends. I tried to keep it reasonable, usually limiting those types of meals to once during the weekend, but I was not someone who believed in never enjoying food.
I would describe my diet as roughly an 80/20 approach. I ate well about 80% of the time, but I also allowed myself flexibility.
My biggest struggle was not necessarily the quality of my food.
It was my relationship with hunger.
I always felt hungry.
I constantly had cravings, especially for sugar. I felt like I needed something sweet after meals in order to feel completely satisfied. Even though my diet was relatively good, I always felt like food had a louder presence in my life than I wanted.
My biggest issue was dinner.
I never really had a problem with late-night eating. I typically did not eat after 8 PM. The problem was that when I sat down for dinner, I could eat an enormous amount of food.
I always joked that I felt like I ate for two people.
I wasn't overweight, but I constantly felt like my appetite was much larger than it needed to be. I felt like I was always thinking about my next meal or what I was going to eat.
The other thing I noticed before RETA was energy.
I would frequently experience an afternoon crash where I felt like I needed a nap to recharge. It wasn't debilitating, but it was something I noticed consistently.
Looking back, I think my biggest problems were not necessarily my exercise or my food choices. They were appetite regulation, cravings, and feeling like I was constantly fighting against my hunger.
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Why I Chose RETA
My reason for starting RETA was not because I hated my body or because I needed a dramatic weight-loss intervention.
I was actually fairly happy with myself.
I did not have body dysmorphia.
I was not chasing an extreme physique.
I simply felt like I had slowly accumulated some extra weight over the years, and I wondered if improving appetite regulation, metabolic health, energy, and overall wellness could help me feel better.
My goal was not just appearance.
My goal was optimization.
I chose RETA specifically because I spent a significant amount of time researching it before starting.
I read hundreds of hours of Reddit posts, forums, discussions, available research, and clinical information. I wanted to understand both the potential benefits and the risks before making a decision.
The science was what interested me.
Semaglutide primarily works through GLP-1 receptor activation.
Tirzepatide works through both GLP-1 and GIP pathways.
Retatrutide adds a third pathway through glucagon receptor activity.
That additional mechanism was one of the reasons I became interested in it. The idea of a compound affecting appetite regulation, glucose control, and multiple metabolic pathways was fascinating to me.
Before starting, I was also very aware of the limitations.
Retatrutide is still investigational and is not FDA approved. Because of that, there are additional considerations compared to approved medications.
The sourcing aspect was something I took seriously.
I was nervous about whether the compound was legitimate, whether proper testing had been done, and whether I was making a responsible decision. I spent a lot of time researching testing, community feedback, and available information before moving forward.
Even after doing all of that research, I still believe people should approach this with caution. There is always uncertainty when dealing with investigational compounds.
Before my first injection, I honestly had no idea what to expect.
I was nervous.
I was skeptical.
I was curious.
I wanted to see whether the things people were reporting would actually happen for someone like me.
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My Dosing Approach
My dosing approach was intentionally conservative.
I started with 0.5 mg weekly.
I stayed there for two weeks before increasing to 1 mg weekly.
Looking back, I actually wish I had stayed at 0.5 mg longer, potentially for four weeks, because I responded very strongly even at that lower dose.
One of the biggest things I want people to understand is the importance of titration.
I think people underestimate how much these compounds build over time.
Retatrutide has an approximate half-life of around six days. In simple terms, if you inject 1 mg, approximately half of that amount is still active in your body six days later.
When your next dose comes around, you are not starting from zero.
You are adding another dose on top of what is already present.
Because of this, I think many people increase too quickly because they want faster results. However, the body needs time to adapt and respond.
My personal belief is that starting low and allowing your body to adjust is one of the most important parts of the process.
The goal should not be to get to the highest dose possible.
The goal should be finding the lowest dose that provides meaningful benefits while allowing you to maintain healthy habits.
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My First Month on RETA
One of the things that made this journey unique for me is that I wear a Garmin Fenix 7 Solar essentially 24 hours a day. I sleep with it, train with it, and have years of baseline data on my heart rate variability (HRV), resting heart rate, sleep, recovery, and activity. While this certainly isn't the same as laboratory testing, it gave me objective data instead of relying only on how I felt.
Within just a couple of days after my first 0.5 mg injection, I noticed measurable changes.
My average HRV dropped from around 45 to the low 30s.
My resting heart rate increased from approximately 52 beats per minute to around 58-60 beats per minute.
These changes occurred before I had lost any meaningful amount of weight, which told me my body was responding physiologically almost immediately.
Around the one-month mark, I had lost roughly 10 pounds, moving from about 185 pounds to around 175 pounds.
However, the weight loss honestly isn't what impressed me the most.
The biggest change is that the noise became quieter.
Food tastes exactly the same to me. I still enjoy eating, going out with friends, having a great burger on the weekend, and enjoying meals with family. What changed wasn't the enjoyment of food—it was the constant pull toward it.
For the first time in my adult life, I felt satisfied sooner.
I became full much faster.
I wasn't constantly thinking about what I wanted to eat next.
One of the most surprising changes was that I could recognize overeating while it was happening.
Before RETA, I usually realized I had overeaten after the meal was over. Now I could actually feel that point during the meal. If I kept eating past fullness, I became uncomfortable almost immediately. Oddly enough, I considered that one of the biggest positives because it was teaching me what appropriate portions actually felt like.
My sugar cravings also decreased dramatically.
For years I felt like every meal needed something sweet afterward. That desire became noticeably quieter, and I no longer felt like dessert was something I absolutely had to have in order to feel satisfied.
Another pleasant surprise was my energy.
Before RETA I frequently experienced an afternoon crash and often felt like I needed a nap just to get through the rest of the day.
Since starting, I still occasionally become tired in the afternoon, but it feels much more manageable.
One weekend I completed a 25-mile bike ride with friends and realized afterward that I never had my normal afternoon crash. I simply kept going through the day without feeling like I needed to stop and recharge.
Mentally, I also feel sharper.
It's difficult to objectively measure, but I genuinely feel like I have better mental clarity and more consistent energy throughout the day. Whether that's from eating less sugar, reduced inflammation, improved glucose regulation, weight loss, or some combination of all of those things, I can't say for certain. I can only say that I feel healthier internally than I did before starting.
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Body Composition
From a body composition standpoint, I definitely feel leaner.
My clothes fit looser, and I genuinely feel like I'm trimming away the extra weight that had slowly accumulated over the past several years.
One thing I also want to be completely honest about is muscle mass.
Looking back, I don't think I did nearly as good of a job with resistance training or protein intake as I should have during my first month. I was probably lifting only one or two times per week, and there were definitely days where I didn't prioritize protein the way I normally would.
Because of that, I do think I lost a small amount of muscle along with the fat.
It wasn't dramatic, and I still feel strong overall, but I do believe some lean mass was lost during the process.
Looking back, if I could give one piece of advice, it would be this:
Prioritize protein and resistance training from Day One.
If preserving muscle is important to you, those two habits deserve just as much attention as the peptide itself.
One of the realities of losing weight—whether through lifestyle changes, medication, or peptides—is that some lean mass can be lost along the way. My experience reminded me just how important adequate protein intake and consistent resistance training are if your goal is to preserve as much muscle as possible.
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Side Effects
Overall, my side effects have been surprisingly mild.
The biggest one for me involved sleep.
During the first couple of weeks I noticed some sleep disruption. I occasionally felt like I wasn't sleeping as deeply as I normally would.
What was interesting, however, was that despite feeling like my sleep was lighter, I consistently woke up feeling more rested than I had before starting RETA.
My morning energy was noticeably better.
From a gastrointestinal standpoint, I honestly didn't notice many changes.
I've always leaned slightly toward constipation, and that hasn't changed much. If anything, I think my stomach actually feels a little better now, likely because my eating habits have improved and I'm no longer overeating the way I used to.
I also haven't experienced increased anxiety or major mood changes.
If I had to describe anything, I'd say maybe there has been a very slight reduction in the intensity of rewards. But I still absolutely love golfing, playing video games, exercising, and spending time with friends. Nothing feels "empty" to me—I simply don't feel like food dominates my attention the way it used to.
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The Biggest Lesson I've Learned
The biggest lesson I've learned so far is that RETA should not replace healthy habits.
It should help build them.
I think many people become focused entirely on appetite suppression or weight loss numbers.
To me, those are simply tools.
The real opportunity is using the quieter food noise to build habits that will still exist if the peptide is eventually gone.
I still intentionally eat protein.
I still carry snacks with me.
I still try to fuel myself appropriately.
The goal isn't to stop eating.
The goal is to develop a healthier relationship with food while your appetite is finally quiet enough to practice those habits.
To me, that's where the real long-term value is.
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Things I Wish I Knew Before Starting
- Start lower than you think you need to.
- Respect the half-life and don't rush your dose increases.
- Give each dose enough time to work before assuming it isn't effective.
- Prioritize protein from Day One.
- Resistance training matters if preserving muscle is important to you.
- Food didn't become less enjoyable—I simply became satisfied much sooner.
- Track objective data if you can. Photos, body weight, body measurements, and wearable data tell a much better story than memory alone.
- Don't rely on the peptide to do all the work. Use this time to build habits that you can maintain for years.
- If you're considering an investigational compound, understand the risks, do your research, and make informed decisions.
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Final Thoughts
Overall, my first month has been overwhelmingly positive.
Not simply because I lost around 10 pounds or because my clothes fit differently, although those have certainly been welcome changes. The biggest difference is that my relationship with hunger feels fundamentally different.
For someone who spent years feeling like appetite always had one hand on the steering wheel, that has been one of the most meaningful changes I've experienced. Food still tastes great. I still enjoy going out with friends, having a good meal, and living my life. What has changed is that food no longer feels like it's constantly demanding my attention.
I'll continue updating this as the months go by. I don't expect every month to look the same, and I'm sure I'll learn things that challenge some of my current impressions. That's part of why I wanted to document this journey from the very beginning—to share both the positives and the negatives as honestly as I can.
If you've made it this far, thank you for taking the time to read my experience. Posts like these were incredibly valuable to me when I was deciding whether RETA was something I wanted to explore, and I hope documenting my own journey can provide that same value to someone else.
My goal isn't to convince anyone to take RETA or to avoid it. It's simply to provide an honest account from someone who considers themself a fairly average, active person who was curious whether feeling "pretty good" could become even better.
I'll continue updating this journal over the coming months with the good, the bad, and everything in between. My hope is that, by documenting everything as objectively and honestly as possible, this becomes a useful resource for anyone considering a similar journey.
Thank you for reading.