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Adults who go to bed lonely get stress hormone boost next morning

the day have higher bedtime levels of cortisol and flatter overall levels of the stress hormone, typically considered a risk factor for disorder. "High levels of cortisol in the evening are a kind of biological signature of a bad day," Adam noted.

The study also provided evidence that, in addition to simply being at the mercy of your daily experiences, cortisol also plays a role in influencing them. Individuals with lower levels of cortisol in the morning experienced greater fatigue during the day, a result with potential implications for understanding chronic fatigue.

In all of her work, Adam is interested in how people's changing social environments get under the skin to influence their biology and health. "Stress systems are designed to translate social experience into biological action," she said. "They are designed to be a conduit from the outside world to our internal worlds so that we can better respond to our social context. The overarching question of my studies of these systems in a variety of contexts is whether overuse of these systems plays a role in disease outcomes."
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Source:Northwestern University


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