The study found that loneliness decreases the response of some body receptors，cutting off the immune control and anti－inflammatory effects of the stress－related hormone that also helps regulate the conversion of carbohydrates (碳水化合物) to energy.The depressed response of the stress－related hormone concurs with the known effects of loneliness and provides a potential target for treatment.

　　“This study—the first to link feelings with gene changes—is in some sense groundbreaking，”says Emma Adam，an associate professor at Northwestern University.“It fills in the black box.”

　　According to John Cacioppo，an author of the study and a psychologist from the University of Chicago，the work suggests that loneliness is a warning sign，much like physical pain.“This very process of feeling bad because of disconnection contributes to what it means to be human，”he says.“It makes us care for other people and want to reconnect when we’re disconnected.”

　　41.From the passage we know lonely people________.

　　A．have higher rates of diseases

　　B．have bad and little genes

　　C．are full of energy

　　D．are quick to the responses of some body receptors

　　42．According to the passage，which of the following statements is TRUE?

　　A．The lonely people’s gene expression is quite different from the gene pattern of some diseases.

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