Explain what happens to ketone levels in the body after prolonged starvation.
What will be an ideal response?
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When a person is in a state of semistarvation or fasting, the amount of glucose in the body falls, so insulin production falls. This fall in blood insulin then causes fatty acids to flood into the bloodstream and eventually form ketone bodies in the liver. The heart, muscles, and some parts of the kidneys then use ketone bodies for fuel. After a few days of ketosis, the brain also begins to metabolize ketone bodies for energy. Therefore, ketone levels rise during this period of time.
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