Nutrition in Medical Weight Loss: Preserving Muscle Mass and Optimally Supporting the Body

Frau bei der Selbstinjektion einer GLP-1-Therapie zur medizinischen Gewichtsabnahme.

More and more people are taking medications like Ozempic®, Wegovy®, or Mounjaro® to treat obesity. Weight loss can bring many health benefits. However, the importance of an adequate supply of protein, vitamins, and minerals during treatment is often underestimated.

A targeted diet helps maintain muscle mass, support metabolism, and optimally guide the body through weight reduction.

 

Why is nutrition so important during medical weight loss?

Weight loss medications significantly reduce appetite. Many affected individuals eat much smaller portions and, as a result, consume not only fewer calories but often also less protein and micronutrients.

Without an adjusted diet, this can lead to:

  • Loss of muscle mass
  • Decreased strength
  • Fatigue
  • Reduced physical performance
  • Insufficient supply of vitamins and minerals

Therefore, the goal should not only be weight loss but also to preserve as much muscle mass as possible.

 

Protein protects muscles

During weight reduction, the body needs sufficient high-quality protein.

Among other things, protein helps to:

  • Maintain muscle mass
  • Support the maintenance of normal bones
  • Optimally nourish the body during weight loss
  • Support regeneration after physical activity

Especially when smaller portions are eaten, each meal should be as rich in protein as possible.

 

What helps with reduced appetite?

Many people find it difficult to eat large meals while on GLP-1 medications.

Proven strategies include:

  • Several small meals spread throughout the day
  • Protein-rich foods
  • High-quality protein products
  • Regular hydration
  • Nutrient-rich snacks

This ensures that the body receives adequate nutrition even with reduced appetite.

 

Suitable products during medical weight loss

If a normal diet is not sufficient, specially developed products can be a valuable supplement.

Adozan Fit+

Adozan Fit+ was specially developed for people who want to maintain their muscle mass during weight loss. It provides high-quality protein with a low energy content and is ideal for daily protein supply.

Adozan Protein 100 / Protein+

Adozan Protein 100 consists almost entirely of high-quality protein and can be stirred neutrally into many foods and beverages. This makes it easy to increase protein content.

Adozan Protein+ Hot

For those who enjoy coffee, tea, or soups. Adozan Protein+ Hot is heat-stable and allows for easy protein intake even with hot beverages.

Adozan P-Boost

Especially when on the go or on days with little appetite, Adozan P-Boost offers a practical way to quickly absorb high-quality protein.

 

Nutrition during treatment with Ozempic®, Wegovy®, or Mounjaro®

A balanced diet should be as varied as possible and provide sufficient protein daily.

Particularly suitable foods include:

  • Dairy products
  • Eggs
  • Fish
  • Lean meat
  • Legumes
  • Nuts
  • High-quality protein products

In addition, sufficient fluid intake and regular exercise should be ensured to optimally preserve muscle mass.

 

Conclusion

Medical weight loss is much more than just eating less. It is crucial to optimally supply the body with protein and important nutrients, despite reduced appetite.

A protein-rich diet combined with suitable products can help maintain muscle mass and make weight reduction successful in the long term.

You can find suitable products for medical weight loss in our category Medical Weight Loss.

 

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Frequently Asked Questions

Why is protein important during medical weight loss?

Protein helps maintain muscle mass during weight reduction and supports numerous important bodily functions.

Can I lose muscle mass with Ozempic®, Wegovy®, or Mounjaro®?

Yes. With significant weight loss, muscle mass can be lost in addition to fat. Sufficient protein intake and exercise help to reduce this.

Which products are suitable during GLP-1 therapy?

Protein-rich products such as Fit+, Protein 100 / Protein+, Protein+ Hot, or P-Boost can be a useful supplement if not enough protein is consumed through diet.

Do I need to take additional vitamins?

This depends on individual diet and medical recommendations. Those who consistently eat significantly less should ensure an adequate supply of vitamins and minerals.

 

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Scientific Sources

Swiss Society for the Study of Morbid Obesity and Metabolic Disorders (SMOB)
https://www.smob.ch

Swiss Society for Nutrition (SGE)
https://www.sge-ssn.ch

University Hospital Zurich – Obesity Center
https://www.usz.ch

European Association for the Study of Obesity (EASO)
https://easo.org

American Society for Metabolic and Bariatric Surgery (ASMBS)
https://asmbs.org

 

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Published: 03.07.2026
Last updated: 03.07.2026
Author: Christiane Michaela Wogrin

 

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Author

This article was written by Christiane Michaela Wogrin, founder and CEO of saluvivo GmbH. She focuses on medical nutrition, protein supply, and supporting people after bariatric procedures and in special nutritional situations.

Learn more about Christiane Michaela Wogrin and the philosophy of saluvivo on our About Us page.