研究發(fā)現(xiàn)人在夏天會(huì)比冬天還要感覺壓抑英語美文

　　A new study looking at stress in medical students found that, counterintuitively, the “stress hormone” known as cortisol appears higher during the laid-back summer months.

　　一項(xiàng)針對(duì)醫(yī)學(xué)院學(xué)生壓力的新研究發(fā)現(xiàn)，與直覺恰恰相反，被稱為皮質(zhì)醇的“壓力激素”在悠閑的夏季顯得更高。

　　Researchers at Poznan University of Medical Sciences in Poland looked at levels of cortisol — a hormone that is released into the bloodstream in response to stress and helps regulate blood sugar and salt — at different times of the year.

　　波蘭波茲南醫(yī)科大學(xué)的研究人員在一年中的不同時(shí)間段研究了皮質(zhì)醇水平，皮質(zhì)醇是一種被釋放到血液中以應(yīng)對(duì)壓力，幫助調(diào)節(jié)血糖和鹽的激素。

　　They took saliva samples from medical students on two nonconsecutive days during the summer and did the same for two nonconsecutive winter days. Samples were collected for a full 24-hour period to analyze daily fluctuations in cortisol levels, which are typically higher in the morning. The study subjects tended to have higher cortisol levels in the summer.

　　他們?cè)谙募久扛粢惶觳杉�醫(yī)學(xué)院學(xué)生的唾液樣本，并在冬季每隔一天做同樣的實(shí)驗(yàn)。樣本要采集整整24個(gè)小時(shí)，以便分析皮質(zhì)醇水平的每日波動(dòng)情況，皮質(zhì)醇水平通常在早上高點(diǎn)。研究對(duì)象的皮質(zhì)醇水平在夏季往往更高。

　　Dominika Kanikowska, lead author of the study, says more research is needed, but the results are surprising.

　　該研究的第一作者多米尼克.卡尼科夫斯說，還要進(jìn)行更多的研究，但目前的研究結(jié)果令人驚訝。

　　“We of course know seasonality in animals,” she says. “But more and more results show that seasonality is also connected with human beings.”

　　她說：“我們當(dāng)然知道動(dòng)物的季節(jié)性，但越來越多的研究結(jié)果表明，季節(jié)性也與人類有關(guān)�！�

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