Eating walnuts instead of other healthy fats like olive oil may lower a dangerous blood fat called lipoprotein(a) in men with high cholesterol—but it doesn’t seem to help women the same way.

61

Pro

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Against

Evidence from Studies

Supporting (1)

61

Community contributions welcome

61

Substituting Walnuts for Monounsaturated Fat Improves the Serum Lipid Profile of Hypercholesterolemic Men and Women

Randomized Controlled Trial

Human

2000 Apr 4

This study found that when people with high cholesterol ate walnuts instead of some other healthy fats, their bad cholesterol marker called lipoprotein(a) went down — but only in men, not in women. This matches exactly what the claim says.

Contradicting (0)

0

Community contributions welcome

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

Substituting Walnuts for Monounsaturated Fat Improves the Serum Lipid Profile of Hypercholesterolemic Men and Women

Score: 61

DOI: 10.7326/0003-4819-132-7-200004040-00005

Similar Assertions

If you swap out a little bit of the healthy fats in your Mediterranean diet (like olive oil) for walnuts, your bad cholesterol (LDL) and overall cholesterol go down a bit—which might help your heart.

61

0

89%

Eating walnuts can make the 'bad' cholesterol in your blood healthier by filling it with good fats, without making it more likely to cause damage—like adding armor instead of fuel to a fire.

61

0

77%