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How is nitrogen used in the human body?

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Nitrogen is an important part of our bodies. Amino acids all contain nitrogen and these are the building blocks that make up the proteins in your hair, muscles, skin and other important tissues. Nitrogen is an important part of your DNA, which defines what you are like in many ways. read more

While nitrogen is an important component of amino acids, most organisms on Earth, including humans, are unable to use free nitrogen. Instead, HowStuffWorks explains that the nitrogen must become “fixed,” meaning that it must first bond with another element. read more

Although nitrogen is abundant in the environment, humans cannot directly use it from the air or soil, but instead depend on microbes and green plants to convert it into form our bodies can use. Your body is constantly recycling nitrogen from amino acids. read more

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