Mice eating olive oil and nuts had more of the good fats (like olive oil and nuts) and less of the bad fats (like butter) in their blood than mice eating a typical fatty diet.

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Evidence from Studies

Supporting (1)

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Replacing Saturated Fat With Unsaturated Fat in Western Diet Reduces Foamy Monocytes and Atherosclerosis in Male Ldlr-/- Mice.

Cohort Study

Animal

2020 Jan

The study found that when mice ate olive oil and nuts instead of butter and milkfat, their blood had more healthy fats and fewer unhealthy fats, exactly as the claim says.

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No contradicting evidence found

Source Study

Replacing Saturated Fat With Unsaturated Fat in Western Diet Reduces Foamy Monocytes and Atherosclerosis in Male Ldlr-/- Mice.

Score: 15

DOI: 10.1161/ATVBAHA.119.313078

Similar Assertions

Mice that ate olive oil and nuts instead of butter had less cholesterol and fat in their blood, which might help keep their arteries from getting clogged.

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When immune cells from mice eating olive oil and nuts were tested in a dish, they absorbed less of the bad cholesterol that clogs arteries than cells from mice eating butter.

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The plaques in mice eating olive oil and nuts had fewer inflammatory immune cells inside them than plaques in mice eating a fatty diet.

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When mice with a genetic predisposition to clogged arteries ate a diet with olive oil and nuts instead of butter and animal fat, their artery plaques got smaller.

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