It is the difference between a medically supervised treatment and a gamble with your health
The consequences can be far reaching: Partners or relatives may unintentionally lose weight because structured meals are cooked less often
PMID 14752199.
According to Balazs, some GI side effects like vomiting and diarrhea can cause you to lose a lot of fluid and essential minerals, so make it a point to drink plenty of water and consider adding electrolytes, too

Protein supplementation combined with resistance training leads to greater preservation of lean mass and strength than training alone. Key point: With adequate protein intake and resistance training, patients can maintainand sometimes increasestrength during GLP-1 therapy despite overall weight loss. Recovery and micronutrients Adequate sleep, hydration, and correction of deficiencies (including vitamin D when present) further support muscle function and recovery. Bottom Line: GLP-1 Medications Improve Body Composition Not Muscle Wasting Semaglutide and tirzepatide do not inherently cause muscle wasting. Most weight lost is fat , and body composition improves. Muscle wasting is primarily a risk of undernutrition , not GLP-1 therapy itself. Protein + resistance training is the most effective strategy to preserve muscle. At Potere Health MD, GLP-1 and GIP therapy is paired with evidence-based nutrition and strength guidance so weight loss is healthier, stronger, and more sustainable

In terms of structure, GLP-1R is constituted by seven transmembrane helices (TMH) interconnected by intracellular loops, accompanied by a C-terminal intracellular domain and a large (w120 amino acid) N-terminal extracellular domain (ECD) (45)