Gastric Sleeve Regrets: What to Know Before Surgery

Updated: May 2026 | Medically reviewed by Tijuana Bariatric Center’s bariatric care team

Many patients research gastric sleeve regrets because they want to know what life after surgery may really feel like. In many cases, regret is not about the procedure alone; it is about unrealistic expectations, difficulty adjusting to new habits, or not knowing the best way to lose weight after gastric sleeve.

The best way to lose weight after gastric sleeve is not a crash diet or a short-term reset. Long-term success usually depends on protein-first meals, hydration, smaller portions, slow eating, vitamin consistency, regular movement, and staying connected with your bariatric care team.

A study published in Obesity Surgery in 2021 indicates that many patients did not regret their decision to undergo bariatric surgery, but some wished they had more realistic expectations about results and post-surgical challenges. In other words, preparation and follow-up matter.

Are There True Gastric Sleeve Regrets After Surgery?

In a way, one could say yes. Some bariatric patients regret choosing gastric sleeves because they were disappointed about not reaching their weight loss goals. Failure to lose enough weight with gastric sleeve is a prime reason for revision surgery. However, creating a smaller new stomach via sleeve gastrectomy provides for easy conversion into gastric bypass or other bariatric procedures that have a malabsorptive component, allowing patients to lose additional excess weight.

The amount and rate at which patients drop pounds after weight loss surgery depend on factors that include:

• Age
• Biological sex
• Starting weight
• Body type
• Genetics
• Exercise habits
• Committing to a nutrition plan

You simply won't know your results until you are in the midst of your weight loss journey. That's why it's important not to create expectations before surgery so you won't have gastric sleeve regrets. Your results will be different than those of the next person, so don't measure your results against someone else's weight loss.

Instead of comparing your progress to someone else’s, focus on the habits that support your own body after surgery. For many patients, the best way to lose weight after gastric sleeve is to stay consistent with the basics: protein, fluids, movement, vitamins, and follow-up support.

Why Some Patients Feel Gastric Sleeve Surgery “Ruined My Life” — And How to Avoid That Feeling

Some people search for phrases like “gastric sleeve surgery ruined my life” when they are scared, frustrated, or trying to understand the harder side of bariatric surgery. In many cases, the issue is not the surgery itself, but unrealistic expectations, lack of emotional support, poor follow-up, difficulty adjusting to new eating habits, or not receiving enough education before surgery.

Gastric sleeve surgery is a powerful weight loss tool, but it is not a quick fix. Patients need to understand that their relationship with food, eating speed, portion sizes, hydration, vitamins, and emotional habits will change after surgery. When patients are not prepared for those changes, the adjustment can feel overwhelming.

At Tijuana Bariatric Center, we believe patients should understand both the benefits and the challenges before making a decision. The best way to reduce the risk of regret is to ask questions early, understand what life after surgery may look like, and choose a team that provides clear guidance before and after your procedure.

What You Wish You Knew Before Bariatric Surgery

Patients expressing what they wish they would have known before their surgery may be a more accurate way of expressing gastric sleeve regrets. Here are some of the most common regrets and what you can do to deal with them.

Regret #1 - Not Realizing How Much Your Relationship With Food Will Change

Eating is an emotional experience. Food is not just for survival. It's about socializing, self-reward, and often an emotional outlet. Many patients report disinterest in food, a common psychological regret, after gastric sleeve. You may want to enjoy your meals so badly, yet you find eating a chore. Getting extreme pleasure out of eating is a sign of food addiction, and if you don't change your eating habits and continue to eat junk food or overeat, you can derail your weight loss goals. Work with our bariatric dietician or a psychologist who can help repair your relationship with food.

Regret #2 - Not Learning to Eat Slowly Before Surgery

Eating too fast can make you overeat, but you'll also encounter another, bigger problem: food can get caught in your stomach pouch, causing pain. Some foods can become easily stuck, so always chew your food thoroughly before swallowing and pause between bites. Make each bite tiny and chew your food to the consistency of mashed potatoes. Eventually, this mindful practice will help you manage and enjoy eating again.

Regret #3 - Dealing With Excess Skin

With massive weight loss can come lots of excessive, stretched skin. Although not everyone experiences excessive skin, your age, skin elasticity, and the amount of weight you lose following bariatric surgery can make your skin droopy in areas like the neck, arms, shoulders, stomach, back, chest, legs, and private areas. Skin removal surgery performed by a plastic surgeon can help restore your emotional health, improve self-confidence, and make your clothes fit great.

Regret #4 - Experiencing Hair Loss

Hair loss is a common side effect of rapid weight loss because you eat less food and absorb fewer nutrients, thereby stressing the body. This condition is temporary. Nevertheless, it is frustrating. Hair loss typically occurs between three and six months after surgery and can last up to a year after your surgery date. To minimize hair loss, consume a minimum of 70 grams of protein for women and 80-90 grams for men daily and take the recommended vitamin supplements.

Regret #5 - Body Dysmorphia, Still Seeing an Obese Person in the Mirror

It may sound strange, but after sleeve gastrectomy you may see the new version of yourself that everyone else does, no matter how much weight you lose. Your body may change so rapidly post-surgery that your mind may not be able to comprehend the difference, especially during the first 12 months. Because of this, many people still view themselves as obese or unhealthy, no matter how much weight they have lost.

Regret #6 - Losing Weight is Hard Work

Your healthcare provider counseled you that weight loss surgery is a tool to lose excess weight and not a magic pill, but did you think it would be that hard? Probably not. You'll have a lot to learn, like the difference between "head hunger" and true, physical hunger. You may feel like you are on an emotional rollercoaster and may question your mental health when you feel depressed over plateaus and other setbacks. Get help from mental health professionals if post-surgery blues are getting the best of you.

Regret #7 - I Didn't Sign Up for the Side Effects

Serious side effects are rare, but keep in mind that gastric sleeve is a major surgical procedure. Bariatric surgery has altered your anatomy and your stomach will need time to heal and adjust. Keep in mind that even though pesky side effects like gas pain, nausea, belching, indigestion and incision pain are pesky, most side effects are only temporary. Follow doctor recommendations to minimize discomfort.

Regret #8 - Why Didn't I Get Gastric Sleeve Surgery Sooner?

Perhaps the only regret shared among many patients is why they didn't get weight loss surgery sooner. Once patients experience significant weight loss and improvements in conditions like high blood pressure, sleep apnea, type 2 diabetes, and other metabolic concerns, they often feel they made the right decision. Having sleeve gastrectomy can be an act of self-care and an investment in your life. Following a bariatric diet, exercising, taking vitamin supplements, and adopting an overall healthy lifestyle can help you achieve long-term success in your weight loss journey.

Side effects to gastric sleeve surgery can take place, however, you do have some control in managing your operation and recovery. In any event, serious side effects are not the norm.