No, losing 10 kg in 2 weeks is neither realistic nor recommended for your health. This promise, often relayed on the internet, hides real dangers for your body and guarantees an almost systematic recovery of weight. This is why we do not recommend this approach:
- Such rapid loss consists mainly of water and muscle, no fat
- The risks to your metabolism and health are important
- Weight recovery rate reaches 95% in the following months
- Healthy alternatives exist to lose 10 kg sustainably
We will explain why Dr Jean-Michel Cohen's Savoir Maigrir method proposes a much more effective approach in the long term, with results proven by more than 700,000 members.
Is it possible to lose 10 kg in 2 weeks?
Technically, some people can display -10 kg on the scale in 14 days. But let's analyze the composition: of these 10 kg, you will lose about 5 to 7 kg of water, 2 to 3 kg of muscle mass and only 1 to 1.5 kg of real fat.
The scientific figures are clear: To burn 1 kg of pure fat, your body must create a deficit of 7,700 calories. To lose 10 kg of fat in two weeks, it would take a daily deficit of about 5,500 calories. Impossible and dangerous.
Laura, 35, lost 9 kg in 10 days with a soup diet. As a result, she recovered 12 kg in three months, exhausted and irritable, with a dietary obsession requiring psychological follow-up.
What are the risks of too fast a diet?
An ultra-restrictive diet exposes your body to serious consequences:
Physical impacts:
- Mass muscle fat (up to 40% of total loss)
- Chronic fatigue and dizziness
- Vitamins B, D, Iron, Magnesium
- Hair loss and nail weakness
- Slowing basal metabolism (up to -30%)
- Cardiac arrhythmia in extreme cases
Psychological impacts:
- Irritability and mood disorders
- Food obsession and guilt
- Risk of eating disorders
- Loss of self-esteem in case of failure
Sophie, 42 years old, was hospitalized after 12 days diet at 400 calories daily for severe dehydration and heart problems. His metabolism took six months to recover.
Why the Cohen method does not recommend express weight loss
Jean-Michel Cohen, with more than 40 years of experience, strongly opposes fast diets for three main reasons:
Metabolic rebound: Your body enters "survival" mode, slows its metabolism by 15 to 25%, and increases your hunger hormones by 25%. Guaranteed result: you regain lost weight with an additional 3 to 5 kg.
Muscle destruction: Muscles burn calories 24 hours a day. One kilo of muscle consumes 13 calories a day compared to 4 for fat. An express regime destroys this capital, sabotaging your future efforts.
Lack of learning: Losing quickly does not teach you anything about nutritional balance. The Cohen method favours sustainable education.
What is reasonable weight loss per week?
We recommend 0.5 to 1 kg per week maximum2 to 4 kg per month. This speed allows you to lose fat (80 to 90%), preserve your muscle mass, and anchor new habits.
To lose 10 kg healthy, count 10 to 20 weeks (2.5 to 5 months). Statistics are non-callable: 95% of slowly losing people maintain their weight after one year, compared to 5% for fast diets.
How can we achieve a goal of 10 kg in a sustainable way?
1. Baseline: Calculate your BMI and calorie needs. To lose 0.5 kg per week, target 1,500 calories daily without falling below 1,200.
2. Progressive rebalancing: Favour lean protein, vegetables at will, and complete starches in controlled portions (80 g raw).
3. Variances management: Allow yourself one meal a week. The Savoir Maigrir program incorporates this flexibility with its 1,400 kcal comfort menus.
4. Regular monitoring: Weigh once a week, measure your monthly size, photograph yourself.
5. Professional support: Dietic monitoring increases your chances of success by 3.
The Savoir Maigrir program: a proven method
Advanced customization: Menus adapted to your tastes and constraints. Choice between fast menu (900 kcal), classic (1 200 kcal) or comfort (1,400 kcal).
Digital tools: Mobile application with weight curve, slimming notebook, more than 1,000 recipes to less than 2€ per meal, IMC calculator.
Human support: Titrated dietician available by message or video every week.
Real flexibility: Switch your menus, adjust the portions, integrate your outputs. The program adapts to your life.
Testimonials: They lost weight safely
Isabelle, 38, 11 kg in 5 months: "After all the fast diets failed, I realized that weight loss quickly guarantees failure. Without hunger or frustration, I stabilized at -10 kg three years later."
Nathalie, 45, -15 kg in 8 months: "The weekly follow-up saved. My coach adapted my menus, motivated me. I learned to eat balanced without deprivation."
Examples of menus to begin weight loss
Typical menu (approximately 1,200 kcal):
- Breakfast: 2 slices of bread + 10 g butter + yogurt + 1 fruit
- Lunch: Green salad + 120 g grilled chicken + 150 g green beans + 80 g basmati rice + 1 apple
- Collation : 30 g almonds
- Dinner: Vegetable soup + 100 g steamed salmon + 200 g broccoli + yogurt 0%
Principles: Proteins at each meal, vegetables at will (300 g minimum), starch in controlled servings, 2 daily fruits, 1.5 to 2 litres of water.
Physical activity: essential to optimize results
Physical activity represents 30% of weight loss and preserves your muscle mass.
| Level | Weeks 1-2 | Weeks 5-8 |
| Beginner | 20 min walk 3×/sem | 30 min walk + 15 min renfo 4×/sem |
| Intermediate | 30 min jogging 3×/sem | 45 min cardio + 20 min renfo 4×/sem |
Calorie expenditure: Running (500-700 kcal/h), swimming (400-600 kcal/h), cycling (400-500 kcal/h).
Can we accelerate the loss safely?
Yes, by optimising your hydration (2 liters daily), gradually increasing your activity, managing stress and sleep (7-8h), and focusing on proteins (heat effect 25%).
Realistic limit: 1 kg per week maximum, i.e. 10 kg in 10 weeks minimum.
Errors to avoid when you want to lose fast
1. Remove starch completely: Causes fatigue and cravings. Reduce portions but do not remove.
2. Skipping Meals: Slows your metabolism by 5% and causes compulsions.
3. Eliminate all fats: Eat 40 to 50 g of good fat daily (olive oil, avocado, fatty fish).
4. Focus only on the balance: Also measure your waist and take monthly photos.
Dr. Jean-Michel Cohen's Word on Rapid Diets
“Les régimes promettant 10 kg en deux semaines sont une arnaque physiologique. Votre corps se défend contre les privations extrêmes en ralentissant son métabolisme et détruisant vos muscles. Dès que vous remangez, il stocke frénétiquement. J’ai vu des milliers de patients prisonniers du cycle infernal : régime drastique, reprise avec surplus, culpabilité, dépression. La seule approche efficace est le rééquilibrage progressif. Avec Savoir Maigrir, nous avons aidé plus de 700 000 personnes à perdre du poids durablement. 10 kg en 5 mois, c’est 10 kg perdus pour toujours.”
Choose between speed and sustainable efficiency
Préférez-vous perdre 10 kg en 2 semaines et les reprendre avec bonus, ou perdre 10 kg en 4 mois et les maintenir des années ?
La méthode Savoir Maigrir représente le choix de l’intelligence et de la santé. Vous bénéficiez d’outils performants, d’un accompagnement humain, et d’une communauté solidaire. L’engagement initial paraît long (10 à 20 semaines), mais ces semaines passeront de toute façon. Autant les utiliser pour construire des bases solides plutôt qu’un énième régime voué à l’échec.
Votre santé mérite mieux qu’une solution express. Choisissez la durabilité, l’efficacité réelle, et le respect de votre corps.
