I lost approximately 60 pounds while taking Zepbound over the past 16 months. That's a significant accomplishment, and I'm genuinely grateful for how much the medication helped me. It changed my relationship with food, helped me develop healthier eating habits, and made losing weight considerably more manageable. About three weeks ago, however, I decided to stop taking it. I had been struggling with GI issues for quite some time, particularly at the higher doses, and I was simply tired of dealing with the side effects. I had already worked with my physician to adjust my dosage several times, moving between 12.5 mg and 15 mg in an effort to make things more tolerable. I was also experiencing considerably more lethargy at 15 mg, so there were several reasons I felt it was time to discontinue the medication.

What I hadn't anticipated was how dramatically different I would feel after stopping. These past three weeks have been some of the best I've experienced in nearly two years. I'm sleeping better, I have considerably more energy, and I feel genuinely happy and excited about everyday life. Nothing particularly exciting has happened to explain this sudden improvement. My job hasn't changed, my daily routines are largely the same, and I haven't experienced some extraordinary event that would account for the difference. Yet I find myself feeling more enthusiastic, more socially engaged, and more interested in things that I hadn't realized I'd gradually lost interest in. It's been such a profound change that I've spent a considerable amount of time reflecting on how I felt during those 16 months.

I think what surprises me most is that I didn't recognize how different I had become while I was taking Zepbound. Looking back, I can identify periods of apathy, diminished motivation, anxiety, and what I can only describe as a strange emotional emptiness. I wasn't particularly unhappy, at least in the traditional sense. I enjoyed my work, spent time doing things I liked, and was pleased with my weight loss. I was happy, but somehow I also wasn't. It's incredibly difficult to explain because I didn't feel overtly depressed. There was just something missing from my everyday experience, almost like my emotional responses had been turned down a few notches without my realizing it.

I also found myself becoming increasingly preoccupied with some rather depressing thoughts about life and aging. I'm 41 years old, and there were times when I felt an almost existential dread about the monotony of everyday life. Wake up, go to work, come home, repeat. Do that for another 20 or 30 years, get old, and eventually die. I realize that contemplating our mortality is perfectly normal, especially as we get older, but the way I was experiencing these thoughts felt different. There was an underlying anxiety and dissatisfaction that seemed to accompany otherwise ordinary days. I sometimes struggled to find the same enthusiasm for social situations or activities I had previously enjoyed. At the time, I didn't necessarily connect any of this to Zepbound. I assumed it was simply how I was feeling about life.

Since stopping the medication, that entire outlook seems to have shifted. I find myself genuinely excited about things again, including ordinary experiences that I hadn't been particularly enthusiastic about in quite some time. It's almost like I've been underwater for an extended period, and suddenly I've broken through the surface and taken a huge breath of fresh air. There have been moments over the past few weeks when I've literally thought, "Holy shit, I feel alive!" It sounds ridiculous when I write it out, but that's honestly how profound the difference has been. I feel like myself again, and I'm only now recognizing how much I missed feeling this way.

My sleep has also improved considerably. I've been using my Apple Watch to monitor my sleep, and before discontinuing Zepbound, I frequently received disappointing sleep scores. Over the past three weeks, I've been consistently recording much higher scores and waking up feeling genuinely refreshed. I realize that Apple Watch sleep scores aren't clinical measurements, and improved sleep alone could account for some of the changes in my energy and emotional well-being. Nevertheless, it's another noticeable difference that has emerged around the same time.

Naturally, I've been wondering whether Zepbound had a greater effect on my emotional well-being than I realized. As someone who works in academia, I'm particularly conscious of the limitations of drawing conclusions from personal experiences. Correlation doesn't establish causation, and there are plenty of possible explanations for what I've been experiencing. Improved sleep, fewer GI issues, changes in nutrition, or simply feeling physically better could all contribute to improved mood and motivation. Still, I was curious whether anything in the scientific literature might help explain what happened.

What I Found in the Research

One of the most interesting papers I encountered was a 2026 case series published in Obesity Pillars by Spencer Nadolsky and colleagues, titled “Resolution of anhedonia-like symptoms in patients treated for obesity with tirzepatide: A three-case series.” The researchers described three women receiving 15 mg of tirzepatide, the active ingredient in Zepbound, who reported reduced motivation, emotional flatness, and diminished enjoyment of activities they had previously found pleasurable. These changes occurred despite successful weight loss, and the patients described symptoms that were distinguishable from their usual experiences of depression. Following dose reductions, two patients experienced substantial improvements without additional medication, while the third required additional treatment. One patient also experienced a recurrence of symptoms when the tirzepatide dosage was increased again.

The researchers used the term anhedonia-like symptoms to describe these experiences. Anhedonia refers to a diminished capacity to experience pleasure or enjoyment and is often associated with depression, although it can occur in other contexts. Reading the descriptions in this paper was fascinating because several aspects resembled what I'd experienced. I hadn't necessarily been sad or miserable while taking Zepbound. I had gradually become less interested, less motivated, and less emotionally engaged with parts of my life. In retrospect, I can recognize those changes much more clearly than I could while they were happening.

Of course, this particular study involved only three patients, all of whom were women, and it would be inappropriate to draw broad conclusions from such a small sample. The researchers themselves presented the findings as preliminary observations that warrant further investigation. Nevertheless, the similarities to my experience caught my attention, particularly because I had also spent considerable time at 15 mg and experienced more pronounced side effects at that dose. I found it especially interesting that one of the patients became more aware of her symptoms after temporarily discontinuing tirzepatide for a medical procedure. That aspect of her experience felt remarkably familiar.

There are plausible biological reasons researchers are interested in this subject. GLP-1 medications influence areas of the brain associated with appetite, motivation, and reward processing. A 2024 systematic review published in Physiology & Behavior examined the relationship between GLP-1 receptor agonists and reward-related behaviors. Some of the research suggests that these medications can influence how people respond to rewarding stimuli, particularly food. Given that reducing food cravings and modifying eating behaviors are among the intended effects of these medications, this makes sense. What remains much less clear is whether those neurological effects might influence other aspects of motivation or enjoyment in certain individuals. The available evidence doesn't establish that Zepbound causes emotional blunting, but it does provide a scientific basis for investigating the possibility.

I also found research that offers a considerably more reassuring picture of the psychiatric safety of these medications. A 2025 systematic review and meta-analysis published in JAMA Psychiatry examined 80 randomized clinical trials involving more than 107,000 participants. The researchers found no significant increase in psychiatric adverse events or depressive symptoms among people taking GLP-1 medications compared with those receiving a placebo. They also identified modest improvements in mental-health-related quality of life. Similarly, in January 2026, the U.S. Food and Drug Administration announced that its comprehensive review found no increased risk of suicidal thoughts or behaviors associated with GLP-1 medications. The FDA's analysis of 91 clinical trials also found no increased risk of several other psychiatric adverse events, including depression and anxiety.

These larger studies deserve considerable weight, and I think they're important to include in any discussion about the potential emotional effects of Zepbound. They suggest that, for most people, these medications do not carry the psychiatric risks that some have worried about. At the same time, I wonder how effectively conventional measures of depression and psychiatric adverse events capture experiences such as diminished enthusiasm, reduced motivation, or emotional flatness. A person might report being generally satisfied with life while still experiencing subtle changes in how strongly they respond to things they enjoy. Whether that represents a meaningful but uncommon medication effect, an indirect consequence of other side effects, or something unrelated remains an open question.

I also keep thinking about the role my sleep may have played in all of this. Poor sleep can significantly affect mood, motivation, anxiety, and cognitive functioning. If Zepbound was contributing to fatigue or disrupting my sleep through persistent GI discomfort, perhaps the improvements I've experienced are largely the result of sleeping more comfortably. Tirzepatide has actually been shown to improve certain sleep-related conditions, including obstructive sleep apnea, so my experience certainly shouldn't be interpreted as evidence that the medication generally harms sleep. There's a lot I simply cannot account for, especially when trying to reconstruct how I felt over such a long period.

One thing I can establish is that fatigue itself is a recognized side effect of Zepbound. According to the official prescribing information, approximately 7% of patients receiving 15 mg reported fatigue-related symptoms, including lethargy, compared with 3% receiving a placebo. That aligns with my experience of feeling considerably more lethargic at the maximum dose. Whether prolonged fatigue contributed to my reduced motivation and emotional disengagement is difficult to determine, but it seems like a reasonable possibility.

Where I Go From Here

Despite everything I've described, I don't regret taking Zepbound. Losing approximately 60 pounds has been a meaningful accomplishment, and the medication helped me make changes that I genuinely believe will benefit me going forward. I've become more mindful of my dietary choices, developed healthier eating habits, and gained a better understanding of what works for me. I recognize that many people have had tremendous success with these medications, and I certainly wouldn't discourage anyone from considering them based on my experience.

For now, my intention is to continue working toward my health goals through cardiovascular exercise, maintaining a healthy diet, and building on the habits I've established over the past 16 months. I'm under no illusion that maintaining weight loss after discontinuing Zepbound will necessarily be easy. The SURMOUNT-4 clinical trial, published in JAMA, demonstrated that participants who discontinued tirzepatide regained a substantial amount of weight on average, while those who continued treatment generally maintained or further reduced their weight. That's something I'll need to be mindful of as I move forward, and I'll continue working with my doctor to evaluate my progress and options.

This entire experience has also made me think more seriously about how we evaluate the success of medical treatments. Weight loss is relatively easy to quantify. We can measure pounds lost, changes in blood pressure, cholesterol levels, and other indicators of physical health. Emotional well-being is considerably more difficult to measure, particularly when the changes are gradual enough that we don't recognize them ourselves. I wonder how many people experience subtle shifts in motivation, enthusiasm, or emotional responsiveness without ever considering whether a medication might be contributing. I also wonder how often those changes might be associated with other aspects of treatment, such as sleep, nutrition, or persistent physical discomfort.

I can't say with certainty that Zepbound caused the emotional changes I experienced, and I don't intend to present my experience as evidence that it does so in other people. The scientific literature is still developing, and the larger studies examining psychiatric safety have generally been reassuring. Nevertheless, the emerging research on anhedonia-like symptoms, combined with my own experience, has given me something worth thinking about and discussing with my physician.

What I find most remarkable is how unaware I was of the difference until the past few weeks. Looking back, I can recognize the diminished interest, the apathy, and that strange sense of going through everyday life without quite the same enthusiasm I used to have. I had become accustomed to feeling that way, and I don't think I fully appreciated just how much it was affecting my outlook.

I'm 41 years old, and a month ago I was spending far too much time thinking about getting older and the repetitive nature of life. Now I find myself excited about the future, interested in things again, and genuinely enjoying the ordinary parts of my day. I've even caught myself wondering why I feel so ridiculously happy when absolutely nothing special has happened.

Maybe the explanation is related to Zepbound. Maybe it's my improved sleep or the relief from months of physical discomfort. It could very well be a combination of several things. I'd love to understand it better, and I hope the research continues to explore these questions.

For now, I'm enjoying how I feel. I've lost 60 pounds, developed healthier habits, and have a plan for continuing my progress. I'm also feeling more awake, energetic, and enthusiastic about life than I have in a very long time.

And I have to say, it feels pretty damn good to be me again.