What are Ketones and why are they so important?

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Ketones are organic Oxygen, Carbon, Hydrogen atoms produced by the liver from fatty acids. Ketones are used as a fuel source by tissues, especially the brain and the heart. Ketones have several benefits for metabolism, such as enhancing mitochondrial function, reducing oxidative stress, and modulating inflammation.  Beta-Hydroxybutyrate is the most prevalent ketone body.