Fats that are more saturated, like those in butter or olive oil, don’t break down as easily in your body, and that might help you live longer if you're eating fewer calories.

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Evidence from Studies

Supporting (1)

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The Influence of Dietary Fat Source on Life Span in Calorie Restricted Mice.

Cohort Study

Animal

2015 Oct

The study tested different fats in mice on a low-calorie diet and found that those eating more saturated and monounsaturated fats (like in lard) lived longer than those eating more polyunsaturated fats. This supports the idea that more stable fats may help extend life during calorie restriction.

Contradicting (0)

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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.

Similar Assertions

If you eat less food, having more saturated fats in your body might help you live longer.

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In male mice eating 40% fewer calories, the type of fat they eat matters — mice live longer on more saturated fats like lard than on unsaturated fats like soybean or fish oil.

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In mice on a low-calorie diet, eating more fat from lard seems to help them live longer than eating fats from fish or soybean oil.

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In mice on a low-calorie diet, eating more fat from lard (like bacon fat) might help them live longer than eating fats from fish or soybean oil.

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In mice on a low-calorie diet, the type of fat they eat might affect how long they live — less polyunsaturated fat and more saturated or monounsaturated fat could help them live longer.

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74%