Vitamin K1 helps protect fats in the blood of baby rats, but it doesn't help protect the fats inside their red blood cells — even though the blood has more antioxidants overall.

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Evidence from Studies

Supporting (1)

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Influence of plasma total antioxidant ability on lipid and protein oxidation products in plasma and erythrocyte ghost obtained from developing and adult rats pretreated with two vitamin K formulations

Cohort Study

Animal

2004 Dec

Vitamin K1 helps protect the liquid part of the blood (plasma) from damage in baby rats, but it doesn’t protect the red blood cells’ outer membranes—even though those cells are also in the same body. So the protection is only in one part, not everywhere.

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No contradicting evidence found

Source Study

Influence of plasma total antioxidant ability on lipid and protein oxidation products in plasma and erythrocyte ghost obtained from developing and adult rats pretreated with two vitamin K formulations

Score: 11

DOI: 10.1023/B:MCBI.0000049383.94541.31

Similar Assertions

Giving baby rats vitamin K1 helps their blood fight off damaging molecules called free radicals, and this helps keep their fats from breaking down too much.

91%

Adult rats don't get any antioxidant boost from vitamin K1, and their blood fats keep getting damaged — unlike baby rats, who do benefit.

78%

Even though vitamin K1 helps protect fats in baby rats' blood, it doesn't help protect the proteins in their red blood cells from damage.

76%