Why is poop brown and smelly?What causes the urine to become yellow?

Опубликовано: 10 Январь 2025
на канале: Dandelion Medical Animation
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By Digesting food, the body breaks it into various nutrients and waste products. As the waste material moves through the colon, it gradually forms into feces.
The large intestine contains a diverse community of bacteria that aid in the final stages of digestion. These bacteria break down complex molecules, releasing gases such as Ammonia and methane. These compounds have a strong, unpleasant odor that can intensify the smell of feces.
When the body breakdown proteins, it releases Sulfur compounds like hydrogen sulfide. These byproducts Have a distinct rotten egg smell.
Also, The breakdown of fats can produce short-chain fatty acids. These acids contribute to the pungent smell of feces.
Red blood cells have a lifespan of about 120 days. When red blood cells reach the end of their life, they are broken down in a process called hemolysis. A yellow-orange pigment called Bilirubin is formed as a byproduct of this process.
Bilirubin is then transported to the liver and excreted into the bile. Bile is a digestive fluid produced by the liver and stored in the gallbladder. Bile plays a crucial role in the digestion and absorption of fats. Bilirubin gives the bile its typical yellowish-green to dark greenish-brown color.
When we eat a meal that contains fats, the gallbladder contracts, releasing the concentrated bile through the bile duct into the duodenum, along with other components of bile; Bilirubin is released into the intestines. As Bilirubin travels through the intestines, it undergoes some chemical changes; Bacteria break down Bilirubin in the intestine, resulting in a brown pigment that gives feces its brown color.
The color of feces can vary depending on the amount of Bilirubin present and how it interacts with other components in the digestive system. Certain foods or medications can affect bile production or how Bilirubin is metabolized, leading to changes in fecal color. For example, consuming large amounts of beets can cause red or pink-colored stool.

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