When we were researching gastric sleeve surgery, we found no shortage of information. What we found less of was honesty.
Most content either painted an unrealistically rosy picture — weight melts off, life transforms overnight — or focused heavily on the risks in a way that felt more like a legal disclaimer than genuine guidance.
We wanted to write the guide we wished we’d had.
Before Surgery: The Process Takes Time
Getting to surgery isn’t quick. Whether you’re going through the NHS or privately, or heading abroad as we did, there’s a significant process of consultations, assessments, diet preparation, and planning before you’re anywhere near an operating table.
The liver reduction diet — typically two to four weeks of very low calorie eating before surgery — is one of the harder parts of the pre-op period. It’s designed to shrink the liver to make the surgery safer, and while it works, it’s not comfortable. Expect to be hungry, tired, and a bit irritable.
Mentally, the lead-up to surgery can be an emotional rollercoaster. Excitement, doubt, fear, and anticipation tend to show up in rotation. That’s completely normal.
The Surgery Itself
The operation is laparoscopic (keyhole), typically taking one to two hours. Around 75-80% of the stomach is removed, leaving a smaller sleeve-shaped pouch. You’re under general anaesthetic throughout.
Recovery in hospital is usually one to two nights. You’ll be on liquids immediately after surgery and won’t be eating solid food for several weeks.
Pain and discomfort in the days following surgery is real but manageable for most people. The shoulder and chest discomfort from trapped gas can be more uncomfortable than the surgical sites themselves — something that surprised us and that’s worth knowing in advance.
The First Few Months
The early post-op period involves a structured return to eating — liquids, then pureed food, then soft food, then normal textures — over several weeks. This isn’t optional or conservative; it’s necessary for safe healing.
Weight loss in the first few months is often rapid and noticeable. This is partly what motivates people — it’s hard not to feel encouraged when the changes are so visible.
But this period also comes with fatigue, hair loss, emotional adjustment, and a complete relearning of how to eat. None of those things are insurmountable, but going in expecting only the positive is a setup for feeling blindsided.
Long Term: Life Changes, Not Just Weight
Gastric sleeve surgery is a tool, not a cure. The weight loss it facilitates is real and often substantial. But maintaining that loss long term requires genuine lifestyle change — not just eating less, but eating differently, moving more, managing stress, staying consistent with supplements, and doing the mental and emotional work that surgery doesn’t do for you.
What we can say, with hindsight, is that the changes go well beyond the physical. The way you think about food, the way you experience your body, the way you move through the world — all of it shifts. Not always in ways you can predict, but in ways that are, overall, worth it.
Disclaimer: This post is based on our personal experience and is intended for general information only. It should not be taken as medical advice. Every journey is different, and it’s important to speak with a qualified healthcare professional about your own circumstances before making any medical decisions.