女性睡不到6小時 乳癌風險多6成Women sleep less than 6 hours more than 6 into breast cancer risk

女性睡不到6小時 乳癌風險多6成 【中央社】英國「每日郵報」報導，每天睡眠不足6小時的女性，罹患乳癌的風險將會增加超過60%。 這篇發表在「英國癌症期刊」的研究報告說，蠟燭兩頭燒的人，會大大提高罹患可能致命腫瘤的機率。 科學家相信，睡眠不正常會擾亂身體分泌攸關重要荷爾蒙「褪黑激素」，這種荷爾蒙在預防癌症上扮演重要角色。 日本科學家追蹤將近2萬4000名婦女的生活習慣長達8年，他們的研究結果，提供截至目前為止的最強有力證據，證明獲得充足睡眠，攸關預防乳房腫瘤。 研究人員發現，相較於睡足7小時者，每晚僅睡6小時或不足6小時的女性，罹患乳癌的機率高出62%。 平均每晚睡9小時的女性，罹患腫瘤的風險則下滑28%。 領導這項研究的柿崎真沙子說：「我們發現睡眠時間和癌症之間關係很密切。只睡6小時或不足6小時的人，罹癌風險明顯增高。」 人類睡覺時，大腦會分泌褪黑激素來調節生理時鐘，研究人員懷疑，這種荷爾蒙藉由控制雌激素的分泌量，在預防乳癌上扮演重要角色。目前已知不少乳癌的形成都跟雌激素有關。 位於日本仙台的東北大學醫學研究所科學家，針對參與健康與生活習慣調查的年齡介於40到79歲婦女的調查資料展開研究，這項調查包括詢問睡眠時間在內。 在長達8年追蹤調查期間，有143名受訪者被診斷出罹患乳癌。 研究人員分析罹癌對象的睡眠習慣時，發現睡得太晚、起得太早，都有很大影響。 報導引述英國癌症研究中心表示，越來越多研究報告指向睡眠不足和癌症有關聯。 該中心科學資訊主任史考克羅表示：「目前的證據顯示，睡眠和工作模式有可能在乳癌風險上略有影響。」 他說：「但相較於諸如體重、運動和飲酒習慣等已知生活習慣風險，這種影響的重要性目前尚言之過早。」 2008-11-20 Women sleep less than 6 hours more than 6 into breast cancer risk Britain】 【Central News Agency, "Daily Mail" reported that less than 6 hours of sleep a day of the women, the risk of breast cancer will increase by over 60%. This published in the "British Journal of Cancer," the report said, burning the candle at both ends, will raise the level of suffering from potentially fatal risk of cancer. Scientists believe that sleep will not disrupt normal body secretion of hormones important at stake, "melatonin", the hormones in cancer prevention play an important role. Japanese scientists tracking nearly 24,000 women for up to 8 years of life, their findings so far provided the strongest evidence that adequate sleep, and death to prevent breast tumors. The researchers found that compared to Shuizu 7 hours, 6 hours sleep per night only, or less than 6 hours of a woman's risk of breast cancer than 62%. An average of 9 hours of sleep each night a woman's risk of developing tumors were down 28%. The study of the leading real sand Kakizaki said: "We found that sleep time between cancer and a very close relationship. 6 hours sleep a night, or less than 6 hours, significantly increased risk of cancer." Human sleep, the brain will secrete melatonin to regulate the biological clock, researchers suspected that such control by hormone estrogen secretion, in the prevention of breast cancer play an important role. At present, many of the known breast cancer related to the formation of estrogen-related. At Tohoku University in Sendai, Japan's Institute of Medicine scientists for participation in health and lifestyle survey between the ages of 40-79 years old women, the study data, the survey asked, including sleep time. During the 8-year follow-up survey, 143 respondents was diagnosed with breast cancer. The researchers analyzed the sleep habits of the target cancer and found sleep too late, starting too early, people will have a significant impact. The report quoted the British Cancer Research Center, said that an increasing number of studies point to lack of sleep and associated cancer. The director of the Center for Science Information Brent Scowcroft, said: "The current evidence suggests that sleep and work patterns may have a slight impact on breast cancer risk." He said: "However, as compared to body weight, physical activity and drinking habits, and other known risk lifestyle, the importance of this influence is still too early to say." 2008-11-20 View more information, see the World Journal reported that e-ePaper

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