Explore the science of your internal factory. Learn how your gastrointestinal tract, microbiome, and gut bacteria impact metabolic wellness and heart health.

Your gastrointestinal tract is actually a sophisticated communication system. It’s giving you real-time feedback on your health, your microbiome, and even your risk for future diseases—if you only knew how to listen.
Poop and fart. An engaging overview of the science of poop and fart, covering digestive health, biology, and fun evolutionary facts.







The internal factory refers to your gastrointestinal tract, a high-tech industrial complex that transforms food through a twenty-foot odyssey. This sophisticated communication system does more than just process calories; it provides real-time feedback on your health and microbiome. By understanding how this muscular tunnel works, you can better interpret the signals your body sends regarding your overall well-being and disease risk.
The speed and efficiency with which your digestive system processes food is a significant indicator of your internal health. In fact, how fast food moves through your gastrointestinal tract is considered a better predictor of metabolic wellness and heart health than many other simple metrics. Monitoring these digestive processes helps you listen to the vital feedback your internal factory provides about your long-term physical condition.
Your microbiome is a thriving ecosystem where bacteria play a central role. Approximately half the dry weight of a single stool consists of trillions of bacteria, many of which remain alive and active. This biological reality proves that waste is not just junk the body rejects, but a living reflection of the complex bacterial environment maintained within your digestive system and gastrointestinal tract.
Cree par des anciens de Columbia University a San Francisco
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