Short Wave Short Wave

The red flags that may be hiding in your poop

Aug 7, 2026 · 12m

Summary

NPR’s Shortwave features gastroenterologist Dr. Tricia Pasricha discussing how stool color and consistency can signal health issues, from rare silver poop to early-onset colon cancer. The episode covers the Bristol Stool Scale, warning signs like blood or pale stool, and the link between ultra-processed foods and rising cancer rates in young adults. Dr. Pasricha also offers tips for gut health, emphasizing fiber and fermented foods to nourish the microbiome.

Topics discussed

Intro and sponsor messages The rare case of silver poop Rising colon cancer rates in young adults Episode overview and sponsors Understanding the Bristol Stool Scale Red flags: Blood, pain, and habit changes Dietary causes for stool color changes Life hack: Reducing gas odor with Pepto Ultra-processed foods and early-onset cancer Feeding your microbiome with fiber and probiotics Outro, credits, and final sponsors
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