The blue dye methylene blue cut the amount of a harmful chemical (hydrogen peroxide) in heart and blood vessel fat by about half when tested in the lab.

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Evidence from Studies

Supporting (1)

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Methylene blue reduces monoamine oxidase expression and oxidative stress in human cardiovascular adipose tissue

Cross-Sectional Study

Human

2025 Apr

The study found that a small amount of methylene blue, left on fat tissue from the heart for a day, lowered harmful chemicals called ROS—which include hydrogen peroxide—so the claim that it reduces them by 30–50% is supported.

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No contradicting evidence found

Source Study

Methylene blue reduces monoamine oxidase expression and oxidative stress in human cardiovascular adipose tissue

Score: 33

DOI: 10.1007/s11010-024-05092-z

Similar Assertions

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