Having high levels of cortisol in your blood for long periods of time can lead to chronic stress which has many negative health effects. Surprisingly, having high levels of cortisol is not always bad, especially if you are a North American red squirrel. Scientists are studying the impact of population density on survival found that pregnant red squirrels in a more crowded forest had higher cortisol levels and produced babies that grew faster.
Every four in 10,000 people in the United States have dilated cardiomyopathy, a disease that causes the left ventricle of the heart to become enlarged. Turkey hearts can serve as a model for the human heart as it undergoes heart failure and cardiomyopathy because their hearts are very similar. By countering a mutated form of cardiac muscle protein with another form of mutated protein, a heart’s normal condition can be restored.