diff --git a/koboldsim/stats.go b/koboldsim/stats.go
index 2ed99b3..e07da05 100644
--- a/koboldsim/stats.go
+++ b/koboldsim/stats.go
@@ -1,6 +1,8 @@
 package koboldsim
 
 import (
+	"math"
+
 	"git.chromaticdragon.app/kistaro/CardSimEngine/cardsim"
 )
 
@@ -65,13 +67,17 @@ func (k *KoboldMine) StatTaxRate() float64 {
 }
 
 func (k *KoboldMine) Kobolds() int64 {
-	return int64(k.BasePopulation * k.FoodSupply)
+	return int64(k.BasePopulation * k.FoodSupply * (1 - 0.5*(k.StatObesity()/100)))
 }
 
 func (k *KoboldMine) DisplayedFoodSupply() float64 {
 	return (k.FoodSupply - 1) * 100
 }
 
+func (k *KoboldMine) StatObesity() float64 {
+	return 100 / (1 + math.Exp(-0.05*(k.DisplayedFoodSupply()-37)))
+}
+
 func (k *KoboldMine) Stats() []cardsim.Stat {
 	stats := cardsim.ExtractStats(k)
 	funcs := []cardsim.Stat{