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Lactase Persistence & Lactose Digestion Simulator

Interactive 3D gut model: set lactase enzyme activity (the genetic lactase-persistence trait), lactose dose and gut transit time, and watch Michaelis-Menten enzyme kinetics decide how much sugar is absorbed in the small intestine versus fermented into gas by colon bacteria.

Medicine & Biophysics3DModerate60 FPS📱 Mobile-adapted

Milk tolerance is not a lifestyle choice — it is a single brush-border enzyme, lactase, whose activity is set genetically and varies enormously between individuals and across human populations. This simulator runs a real Michaelis-Menten hydrolysis model along a 3D gut, letting you dial lactase activity, lactose dose and small-intestine transit time and watch, live, how much sugar is absorbed before it reaches the colon versus how much is left for gut bacteria to ferment into gas — the direct biophysical mechanism behind lactose intolerance and its very uneven global distribution.

⚙ Under the hood

Interactive 3D gut model: set lactase enzyme activity (the genetic lactase-persistence trait), lactose dose and small-intestine transit time, and watch Michaelis-Menten enzyme kinetics decide how much sugar is absorbed versus fermented into gas by colon bacteria.

digestionenzyme-kineticsgeneticsgut-microbiomephysiologypharmacology

3D · Three.js / WebGL renderer · 60 FPS target · runs fully client-side, no install