In real clinical care, fatigue can come from many overlapping factors
Spatial control of EGF receptor activation by reversible dimerization on living cells
The primary mechanism for these symptoms is altered gastrointestinal motility rather than changes to digestive enzyme production
We need well-designed, long-term studies in people taking GLP-1 drugs that: directly measure skeletal muscle (not just lean mass), assess muscle function and mobility, track outcomes over months to years, not weeks, and test mitigation strategies, not just observe loss
Sick day medication guidance should be provided (such as the Sick Day Action Plan from Kidney Health Australia, available online at so that patients with diabetes are aware to temporarily withhold SGLT-2 inhibitors when unwell or not eating or drinking normally
Breakfast: 30-40g protein Lunch: 30-40g protein Dinner: 40-50g protein Snacks/Shakes: 20-40g protein as needed to hit daily target The reduced appetite from Tirzepatide can make hitting protein targets challenging