Obesity: a chronic disease, not a lack of willpower

Obesity is a chronic disease, recognised as such by the wider medical community, arising from a complex interplay of genetic, hormonal, psychological, social and environmental factors. It is neither a choice nor a lack of willpower. If this concerns you or a loved one, the most useful starting point remains a conversation with a GP, who can refer to an endocrinologist or a nutritionist to build a tailored, lasting plan.

Moving past a stubborn misconception

"Just eat less and move more" — a phrase still heard far too often — ignores the biological reality of obesity. Body weight is regulated by complex hormonal mechanisms — appetite, satiety, energy expenditure — that vary between people and can become durably disrupted, particularly after repeated rounds of dieting. Genetics strongly influences predisposition to excess weight, as do certain medications, hormonal disorders, chronic stress, poor sleep, and living conditions that limit access to balanced food and physical activity. Reducing obesity to a question of personal discipline is not only medically inaccurate, it is also deeply hurtful to those affected, who often face daily stigma — in how others look at them, sometimes even within the medical setting itself.

Beyond the number on the scale

Body mass index (BMI) remains a useful marker at population level, but it is a blunt tool for an individual: it does not distinguish fat mass from muscle mass, says nothing about how weight is distributed in the body, nor about a person’s actual metabolic health. Two people with the same BMI can carry very different health risks. That is why a proper medical assessment looks well beyond the number: waist circumference, blood tests, blood pressure, sleep quality, real-world activity levels, and the psychological and social context. The goal is never an isolated figure, but the person’s overall health.

A whole-person approach, not another diet

Unlike a one-off diet, managing obesity is built over time, with a multidisciplinary team when needed: a GP, an endocrinologist to look for a possible hormonal cause, a nutritionist or dietitian for realistic, sustainable food guidance, sometimes a psychologist to work on the relationship with food and body image, and a physiotherapist to rebuild physical activity gradually and safely. Depending on the situation, medication or bariatric surgery may be offered, always after a thorough assessment and within structured medical follow-up — these are never decisions taken alone or lightly.

Yo-yo dieting: a trap worth avoiding

Stringing together strict, restrictive diets, followed by weight regain sometimes exceeding the starting weight, is an extremely common pattern — and a particularly harmful one. These repeated cycles wear the body down, durably disrupt the hormonal regulation of weight, and often fuel a sense of personal failure that has nothing to do with willpower: it is the restrictive diet itself that, biologically, drives the weight back on. A gradual, realistic approach built to last delivers far better long-term results than intense, short-lived deprivation.

Real benefits from even a modest weight loss

Good news, still too little known: reaching an "ideal" weight is not required to see real health benefits. A modest weight loss, around five to ten percent of starting weight, achieved gradually, already brings measurable improvements in blood pressure, sleep, joint mobility, everyday energy and several metabolic markers. Setting achievable goals — and celebrating them — is often far more effective, and far more sustainable psychologically, than aiming for a radical transformation.

These benefits also tend to compound over time: better sleep improves energy and appetite regulation, which in turn makes the next small change easier to sustain. That is one more reason to judge progress by how someone feels and functions day to day, not solely by a number on a scale.

Care and support in Luxembourg

The GP remains the natural entry point for raising the topic without judgement and arranging an initial assessment. From there, referral to an endocrinologist, nutritionist or dietitian follows as needed, with ongoing coordination over time. Coverage for obesity and its possible complications through the Caisse nationale de santé follows the usual reimbursement rules, with specific schemes for certain forms of support; details are on cns.lu. Talking to a doctor about weight, without shame, is often the hardest first step — and the most worthwhile one.

Support does not stop once a plan is agreed. Weight management is rarely a straight line, and setbacks are a normal part of the process rather than a sign that the approach has failed. Keeping regular appointments, even brief ones, helps adjust the plan as circumstances change — a new job, a pregnancy, an injury that limits activity — instead of abandoning the effort altogether at the first plateau.