Every two years, they were checked for levels of the stress hormone cortisol, symptoms of depression and degree of self-esteem. Self-esteem was measured by responses to questions such as whether a person felt worthless.
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Every two years, they were checked for levels of the stress hormone cortisol, symptoms of depression and degree of self-esteem. Self-esteem was measured by responses to questions such as whether a person felt worthless.
Read entire story here.