Mifflin-St Jeor Safe Floor
GLP-1 Safe Caloric Floor & Starvation Defense Calculator
GLP-1 medications can blunt hunger cues so severely that patients drop into dangerous 600–800 kcal starvation deficits. This calculator identifies your non-negotiable metabolic safety threshold.
Your Biometrics
Metabolic Output
Non-Negotiable Caloric Floor
1255 kcal / day
Absolute metabolic safety floor (Prevents thyroid T3 conversion drop)
Basal Metabolic Rate (BMR):1530 kcal
Total Daily Expenditure (TDEE):2104 kcal
Safe Fat-Loss Target:1604 kcal
Eating below 1255 kcal forces your liver to catabolize structural muscle protein for gluconeogenesis and triggers telogen effluvium (hair shedding).