When rats eat palm oil, their stomachs hold onto the food longer after 3 hours, but they don’t eat more or less over the whole day — so fullness doesn’t seem to control how much they eat.

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Pro

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Against

Evidence from Studies

Supporting (1)

10

Community contributions welcome

10

Brain Perception of Different Oils on Appetite Regulation: An Anorectic Gene Expression Pattern in the Hypothalamus Dependent on the Vagus Nerve

Randomized Controlled Trial

Animal

2024 Jul 24

The study found that when rats ate palm oil, their stomachs stayed full longer after 3 hours, but they didn’t eat less over the whole day — meaning feeling full doesn’t always make you eat less.

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No contradicting evidence found

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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

Brain Perception of Different Oils on Appetite Regulation: An Anorectic Gene Expression Pattern in the Hypothalamus Dependent on the Vagus Nerve

Score: 10

DOI: 10.3390/nu16152397

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When rats eat extra virgin olive oil, their stomachs stay fuller longer and they eat less over the next day—this might be because their stomach stretches out, which tells their brain they’re not hungry.

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