Eating more healthy fats like those in nuts, seeds, and fish is linked to lower bad cholesterol in people on controlled diets.

Scientific Claim

Higher dietary intake of polyunsaturated fatty acids (PUFA) is associated with lower levels of low-density lipoprotein cholesterol (LDL-C) in controlled feeding studies.

Original Statement

“higher intakes of PUFA were associated with lower LDL-C”

From study:Abstract 18256: Importance of Controlling Dietary Intake of Saturated Fat for Prevention of Coronary Heart Disease: Lessons From the Metabolic Ward Studies

Evidence Quality Assessment

Claim Status

appropriately stated

Study Design Support

Design supports claim

Appropriate Language Strength

association

Can only show association/correlation

Assessment Explanation

The study uses 'associated with' and the design measures biomarker responses under controlled intake. No causal inference is made, aligning with GRADE guidelines.

Evidence from Studies

Supporting (1)

Abstract 18256: Importance of Controlling Dietary Intake of Saturated Fat for Prevention of Coronary Heart Disease: Lessons From the Metabolic Ward Studies

Systematic Review With Meta-Analysis

Human

This study found that when people ate more healthy fats called PUFA instead of saturated fats, their 'bad' cholesterol (LDL) went down—exactly what the claim says.

Contradicting (0)

No contradicting evidence found

Source Study

Abstract 18256: Importance of Controlling Dietary Intake of Saturated Fat for Prevention of Coronary Heart Disease: Lessons From the Metabolic Ward Studies

Score: 54

DOI: 10.1161/circ.124.suppl_21.a18256

Similar Assertions

When you swap out 5% of the fat in your diet from butter or meat to oils like sunflower or fish oil, your 'bad' cholesterol goes down by about 20 mg/dL.

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When you replace bad fats and cholesterol in your diet with healthy oils, your overall cholesterol balance improves by about 0.33 points on the ratio scale.

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Eating foods with artificial trans fats, like some fried or baked goods, is linked to higher bad cholesterol in people on tightly controlled diets.

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Eating more saturated fat, like in butter or cheese, is linked to higher levels of bad cholesterol in people eating strictly controlled diets.

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In a lab diet setting, swapping butter for vegetable oil lowers cholesterol more than just removing artificial trans fats.

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