Eating a lot of animal fat makes your body poop out more fat than usual. When healthy young adults ate about 152 grams of animal fat daily for a month, they excreted nearly three times as much fat in their stool compared to when they ate only 62 grams, showing that the gut can only absorb so much fat before the rest passes through.

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Evidence from Studies

Supporting (1)

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Community contributions welcome

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Influence of diets high and low in animal fat on bowel habit, gastrointestinal transit time, fecal microflora, bile acid, and fat excretion.

Cross-Sectional Study

Human

1978 Apr

The study confirms that eating a lot of animal fat (152g daily) causes significantly more fat to pass through the digestive system and out in stool compared to eating less fat (62g daily) over a month.

Contradicting (0)

0

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No contradicting evidence found

Gold Standard Evidence Needed

According to GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this specific claim, ordered from strongest to weakest evidence.

Source Study

Influence of diets high and low in animal fat on bowel habit, gastrointestinal transit time, fecal microflora, bile acid, and fat excretion.

Score: 45

DOI: 10.1172/JCI109020

Similar Assertions

Eating about 152 grams of animal fat a day for a month doesn't change how your digestive system works or how much you poop. This shows that just eating more fat isn't what causes changes in your gut movement, so other parts of your diet are probably responsible.

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84%

Eating a lot of animal fat makes your body excrete much more bile acid into your stool. This matters because too much bile acid in the colon is thought to increase the risk of developing bowel cancer.

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82%

Eating a lot of animal fat (about 152 grams a day) for a month doesn't change the types of bacteria in your gut or the activity of certain gut enzymes in healthy young people. This suggests that changes in gut bacteria aren't the main reason why a high-fat diet affects the chemistry of your colon.

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72%