Bariatric surgery is often seen as a turning point. For many, it symbolizes a fresh start, relief, and hope. But what happens after surgery is rarely simple.
The scale changes quickly. The body responds. But the mind follows a different rhythm. That’s exactly what Thais Carla shared in a recent interview with Quem. After undergoing surgery in April 2025, she’s lost over 80 kilograms (approximately 176 pounds) and currently weighs around 115 kilograms (approximately 253 pounds).
Despite the significant results, Carla emphasized that surgery doesn’t erase emotional challenges—it simply marks the beginning of a latest chapter.
What Bariatric Surgery Changes, and What It Doesn’t
Bariatric surgery reduces the size of the stomach. It alters hormonal mechanisms linked to hunger and satiety. But it doesn’t operate on emotions, habits, or mental patterns.
According to Tâmara Kenski, a psychiatrist, bariatric surgery isn’t a shortcut or a standalone solution. It’s the start of chronic treatment.
Even though it’s a single procedure, the care is ongoing. Patients need to understand this before surgery—and, crucially, afterward.
In clinical practice, the biggest sacrifices aren’t at the table. They’re in the profound behavioral changes. These changes determine long-term success.
Eating Slowly: When Your Body Becomes the Teacher
Among Thais Carla’s lessons, one stands out. She had to relearn how to eat—literally.
Before surgery, she ate quickly. Afterward, that became a real risk. Her first choking incident was traumatic.
The experience taught her something essential. Food began to demand attention, pause, and presence. Savoring became the rule, not a choice.
This isn’t an isolated experience. It happens to many bariatric patients. The body starts to impose clear limits.
Surgery Doesn’t Reduce Discipline, It Amplifies It
There’s a dangerous myth surrounding bariatric surgery: the idea that everything becomes easy afterward. This simply isn’t true in practice.
According to Kenski, bariatric surgery increases the complexity of self-care. It requires ongoing discipline and constant attention to the body’s signals.
Success depends on well-defined pillars. They go far beyond dietary restriction, encompassing neurobehavioral and metabolic dimensions.
Nutritional adherence needs to be chronic. Fractionated meals and adequate protein are fundamental, not just in the first year.
Supplementation: The Costly Mistake
After bariatric surgery, nutrient absorption changes. Vitamins and minerals aren’t fully utilized. Supplementation is mandatory.
According to the specialist, this is one of the biggest points of failure. After 12 months, many patients stop taking supplements. The body feels it, even if the scale doesn’t show it.
The most monitored nutrients include:
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Vitamin B12.
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Vitamin D.
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Calcium.
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Zinc.
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Thiamine.
Vigilance and periodic exams must be continuous. These steps aren’t optional—they’re part of the treatment.
Exercise: Preserving Muscle Preserves Results
Another essential pillar after bariatric surgery is exercise—but not just any exercise. It needs to be the right kind of training.
Resistance training helps preserve lean muscle mass. This maintains basal metabolic rate and reduces the risk of weight regain.
Without muscle, metabolism slows down. Even with eating little, the body adapts, and weight can return. Physical activity isn’t about aesthetics—it’s a metabolic strategy and should accompany the entire journey.
Dumping Syndrome: The Body Educates
Dumping syndrome scares many patients. It occurs when foods rich in sugar enter the intestine rapidly. The discomfort is immediate.
From a physiological standpoint, the mechanism is simple: there’s accelerated gastric emptying and a high osmolar load in the small intestine.
In clinical practice, dumping becomes powerful feedback. The body “teaches” what doesn’t work and discourages excessive simple carbohydrates.
Although not desirable as a symptom, it often facilitates dietary re-education. Choosing proteins and fiber becomes intuitive.
When Compulsion Shifts
Bariatric surgery reduces food volume, but it doesn’t eliminate reward circuits or impulsive patterns. Before surgery, food often regulated emotions. After surgery, that function disappears. Then, the brain seeks substitutes.
This phenomenon is called behavioral transfer. It can involve alcohol, shopping, overwork, or impulsive relationships. It’s not a moral failing.
It’s a predictable neurobehavioral reorganization and needs to be identified early. Psychoeducation is central to treatment.
Weight Regain Doesn’t Start on the Scale
One of the biggest fears of those who have bariatric surgery is regaining weight. And it rarely happens abruptly. It almost always begins silently.
Small breaks in routine accumulate. Irregular sleep, abandoned workouts, spaced-out medical follow-ups, neglected emotional regulation. The body responds to this combination.
According to the doctor, weight regain begins with behavior, not the stomach. When the structure is lost, physiology adapts.
Bariatric Surgery Is a Tool, Not an Identity
Thais Carla’s story helps broaden the debate. Bariatric surgery was a conscious decision made at the right time.
It doesn’t define who a person is or erase their journey. It simply offers a tool. The real work comes afterward, in building sustainable habits and listening to the body and mind.
Overcoming the emotional weight that the scale doesn’t show is the biggest challenge for bariatric patients—and also the greatest act of self-care.
