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2. Is Blood Blue?

No, but it’s also very easy to see where this myth came from. You might have heard that the blood inside of us is blue when it's heading back to our lungs because it lacks oxygen. When we lack oxygen, our lips turn blue, so why wouldn't our blood turn blue, too? Although blood looks blue through our skin, the blue is just an optical illusion due to the way the light hits our veins.

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