Biological changes in hibernation

Richmond Times-Dispatch, November 30, 2019 (BY DEVI LOCKWOOD, The New York Times)
(submitted by Charlene Uhl, Class X)









Physiologically, the hibernation period is the strangest, and the most compelling, to researchers. When a bear hibernates, its metabolic rate and heart rate drop significantly. It does not defecate or urinate. The amount of nitrogen in its blood rises sharply, without damaging the kidneys or liver. The animal becomes resistant to insulin but doesn't suffer from fluctuations in its blood sugar levels. To read the full article, click here.

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