Losing 100 Pounds with GLP-1 Therapy: My 18-Month Journey

Disclaimer: Patient stories reflect individual experiences. Results vary. This is not medical advice. Always consult your healthcare provider before making changes to your treatment plan.

Life Before GLP-1 Therapy

At my heaviest, I weighed 312 pounds. I am 5'7". The math put me at a BMI of 49, which placed me in the category of severe obesity and made me eligible for nearly every intervention available — bariatric surgery, specialized programs, clinical trials. I had tried most of them in some form. Over twenty years, I had lost collectively hundreds of pounds through various diets, only to regain them every time. Each cycle ended the same way: a period of deprivation, a plateau, a return of hunger that felt like being hunted, and then the slow, demoralizing reclaim of every pound I had worked so hard to lose.

By the time I was 44, I had stopped believing weight loss was possible for me in any lasting way. I managed my weight rather than fought it. I bought clothes in sizes I hated and told myself it did not matter. I avoided mirrors. I declined social invitations that involved physical activity. My knees ached constantly. I had been diagnosed with type 2 diabetes three years earlier and was managing it with two medications. My sleep apnea required a CPAP machine. I was, in every clinical sense of the term, significantly unwell — and I had accepted it as my permanent reality.

My endocrinologist mentioned tirzepatide in passing during a routine appointment in early 2023. She described it as a dual GIP and GLP-1 receptor agonist — I understood approximately none of that — and told me the clinical data was unlike anything she had seen in her career for a non-surgical intervention. I nodded politely and went home and researched for four hours. What I read made me simultaneously hopeful and deeply afraid of hoping. I had been hopeful before.

Getting a Prescription: My Journey to Find a Provider

Getting a prescription was not as simple as my endocrinologist making it happen. Mounjaro (tirzepatide) was approved for type 2 diabetes at the time — Zepbound, the same drug approved specifically for obesity, did not exist yet. My insurance covered Mounjaro for my diabetes, which turned out to be fortuitous, but it took three separate phone calls and a prior authorization process that lasted six weeks before my first prescription was filled. The pharmacy shortage that struck in mid-2023 meant my first three months involved a weekly scavenger hunt across multiple pharmacies.

I want to be transparent about cost because it is a reality that shapes who can access these medications. With my diabetes diagnosis and insurance coverage, my out-of-pocket cost was manageable — but I was aware at every step that many people in identical medical circumstances could not get coverage and faced list prices of over $1,000 per month. I do not know what I would have done in that situation. The accessibility gap in GLP-1 therapy is a genuine problem, and my story is shaped in part by the insurance coverage I happened to have.

My endocrinologist started me on 2.5 mg with very clear guidance: we were going slow, we were protecting my muscle mass, and we were treating this as a long-term intervention, not a quick fix. She connected me with a registered dietitian and, crucially, mentioned that many of her most successful patients also worked with a therapist who understood obesity and metabolic health. That suggestion planted a seed that grew over the following months into one of the most important decisions I made in this entire journey.

The First Six Months: 0-50 lbs

The first six months were medically dramatic in ways I had not anticipated. I lost 50 pounds. I need to pause on that number because it still does not feel real to type. Fifty pounds in six months, while eating comfortably, without the frantic restriction and hunger that had defined every previous attempt. My A1C — the three-month blood sugar average — dropped from 8.1 to 5.9, which moved me from the diabetic range to pre-diabetic. My endocrinologist reduced one of my diabetes medications. She used the word "remission."

The physical changes in those early months were almost disorienting in their speed. My CPAP pressure setting was reduced twice as my airway cleared. The constant dull ache in my knees began to subside around month three and was largely gone by month five. I started walking — first ten minutes, then twenty, then forty-five. I had not exercised voluntarily in years, not because I lacked willpower but because movement had always been painful and exhausting. With 50 fewer pounds, the joints that had been screaming at me fell mostly silent. Walking became something I looked forward to. That shift alone felt like a miracle.

Side effects were real but not devastating. The nausea hit hardest in weeks two through five and again after each dose increase. I managed it with small, frequent meals, excellent hydration, and the bedtime injection trick I had read about online. Constipation was a consistent challenge throughout the first six months — I added a daily fiber supplement and drank more water than I ever had and it stayed manageable. The most unexpected side effect was something nobody had mentioned: a significant reduction in alcohol cravings. I had been a two-glasses-of-wine-per-night person for years. Within two months of starting tirzepatide, I found wine largely unappealing. I have since learned this is a reported phenomenon, likely related to the medication's effects on reward pathways in the brain.

Months 7-12: Working Through Plateaus

The second six months were harder. The rapid losses of the first phase gave way to slower, more variable progress. I hit three distinct plateaus — two to three week stretches where the scale barely moved — and each one tested my resolve differently than the previous one had. By my third plateau, I had enough experience to approach it with relative equanimity: I knew it would break, I knew what to do, and I knew that the scale was not the only measure of progress. My muscle mass had increased. My body composition was changing. The number was not the whole story.

When Zepbound was approved by the FDA in November 2023 specifically for obesity treatment, my insurance switched my prescription from Mounjaro to Zepbound. The medication is chemically identical — tirzepatide — but the approval pathway and insurance category differ. The switch was administratively annoying but medically seamless. My endocrinologist used the transition as an opportunity to increase my dose to 10 mg, which appeared to break my third plateau within two weeks. I lost 8 pounds in month nine.

I started working with a personal trainer in month eight — a decision that transformed the second half of my journey. I was not yet at my goal weight, but I was 60 pounds lighter, my joints felt functional, and my energy was reliable. We started with two sessions per week of light resistance training. The goal was explicitly not fat loss — I had the medication for that — but muscle preservation and building the fitness foundation I would need for the rest of my life. By month twelve, I was lifting weights I could not have imagined holding a year earlier.

The Final Six Months: Crossing 100 lbs

Months thirteen through eighteen brought the losses to completion and the rest of the transformation into focus. Weight loss in this phase was slower — four to six pounds per month rather than the eight to twelve of the early months — but every pound felt hard-won in a different way. By month fifteen, I had lost 85 pounds. I could see the finish line. It was also the phase where the psychological work became most intense and most necessary.

My A1C reached 5.6 at month sixteen — officially non-diabetic. My endocrinologist used the word "remission" again, and this time it felt real in a way it had not at 5.9. She discontinued my second diabetes medication. My blood pressure had normalized. I no longer needed my CPAP machine — a sleep study confirmed my sleep apnea had resolved. I was taking one medication instead of four. These were not small changes. These were the changes that will shape the trajectory of my health for decades.

I crossed 100 pounds lost in month seventeen. I stood on my bathroom scale and the number read 212 — a hundred pounds below where I had started. I had planned some grand reaction for this moment. Instead, I sat on the edge of my bathtub and cried for about ten minutes, not from sadness but from the sheer accumulated weight of what it had taken to get there and everything that had changed along the way. Then I texted my therapist, who I knew would understand exactly what I meant.

The Mental Health Journey

Nobody warned me about the grief. I knew there would be joy and pride and relief. Nobody told me there would also be grief — a real, complicated mourning for the person I had been and the life I had lived in my larger body. I had built an identity and coping mechanisms and relationships over decades in that body. As it changed, things I had not anticipated changed with it. Some friendships shifted. Some relationships became more complicated. I had to learn to accept compliments without immediately deflecting them or feeling guilty for wanting to receive them.

Working with a therapist who understood obesity — not just as a medical condition but as a lived experience with psychological dimensions — was irreplaceable. We worked on the food relationship I had built over a lifetime: food as comfort, food as reward, food as the thing I turned to when everything else felt overwhelming. The medication quieted the biological noise. Therapy helped me understand the emotional patterns that had existed alongside that noise for so long. Both were necessary. I genuinely do not think I would have navigated this as well without that support.

Loose skin became a reality around month ten. I am not going to minimize it — it is a real consequence of significant weight loss and it affects how I feel in my body in complicated ways. I have not had surgery to address it and may not. What I have done is work on accepting my body in its current form as the genuinely extraordinary thing it is: a body that lost 100 pounds, resolved its diabetes, cleared its sleep apnea, and now carries me up hills without complaint. That body deserves more grace than I gave my old one. I am working on providing it.

What I Would Tell My Former Self

I would tell her that this was never about willpower. Not once, in all those years of trying and failing, was the problem that she was not trying hard enough or wanting it enough. The problem was biological — a system that was not receiving the satiety signals it needed to regulate intake appropriately. The medication did not give her willpower. It gave her a nervous system that finally worked the way everyone else's apparently had been working all along. That distinction matters enormously.

I would tell her to get the therapy early — before the weight comes off, not after. The emotional work that needs to happen alongside the physical transformation does not wait for you to reach your goal. It starts the moment your relationship with food begins to change, and you want support in place when that happens. I wish I had started working with my therapist in month one instead of month six.

And I would tell her to be patient with the timeline and the plateaus and the side effects and the slowdowns. Eighteen months feels like forever when you are living it week to week. From the other side, it feels like an entirely reasonable price to pay for what was gained — not just pounds lost, but a life that looks and feels fundamentally different than the one that came before. Every week was worth it. Even the hard ones. Especially the hard ones.