女性饮茶有助预防心脏病和中风
据巴黎媒体日前报道，法国卫生和医学研究所公布的一项最新研究成果表明，每日饮茶3杯以上，可使女性远离心脏病和中风，因为茶可有效防止女性体内动脉血管壁内脂肪物质的沉积。
报道说，研究人员通过超声波检查了2613名男性和3984名女性的颈动脉脂肪沉积情况，受调查者平均年龄为73岁。结果显示，无饮茶习惯的女性中，45%出现因脂肪沉积形成的颈动脉硬化斑；这一数字在每日饮茶1杯至2杯的女性中为42．5%，在每日饮茶3杯以上的女性中为33．7%。
研究还发现，患有高血压的女性也可从饮茶中受益。但研究无法解释，为何茶叶在男性身上没有出现类似效应。一种解释是，茶叶或能提供合成雌激素的物质，而雌激素能保护女性远离心脏病。
茶行业组织“茶顾问小组”的卡特琳·胡德说：“关于饮食的调查结果会受人们固有疾病和生活习惯等因素影响……然而，本项调查结果与受调查女性是否吸烟、是否正接受荷尔蒙替代疗法、是否患血管疾病等无关。”
英国心脏病基金会的营养学家维多利亚·泰勒表示，这项结果与受调查者受教育程度、果蔬摄入习惯等无关，“对习惯饮茶者而言是个好消息”。
调查结果发表在最新一期《动脉硬化血栓与血管生物学》（Arteriosclerosis, Thrombosis, and Vascular Biology）杂志上。（来源：新华网）
生物谷推荐原始出处：
（Arteriosclerosis, Thrombosis, and Vascular Biology），2008;28:353，Stéphanie Debette, Mahmoud Zureik
Tea Consumption Is Inversely Associated With Carotid Plaques in Women
From Inserm, U744 (S.D., D.C., P.A., M.Z.), Lille; Department of Neurology (EA2691) (S.D.), University Hospital of Lille; Inserm, U700 (D.C., N.L., M.Z.), Paris; Inserm, U708 (C.T., A.A.), Paris; Inserm, U593 (J.F.D., P.B.G.), Bordeaux; Inserm, E0361 (K.R.), Montpellier; Inserm, U780 (P.D.), Paris; Centre de Médecine Préventive Cardiovasculaire (J.G.), Broussais Hospital, Paris, France.
Correspondence to Mahmoud Zureik, MD, PhD, Inserm, U700, Faculté de Médecine de Xavier Bichat, 16 Rue Henri Huchard, Paris, F-75018, France. E-mail zureik@bichat.inserm.fr
Abstract
Objective— The aim of this study was to assess the relationship of tea consumption with common carotid artery intima-media thickness (CCA-IMT) and carotid plaques.
Methods and Results— The study was performed on 6597 subjects aged 
65 years, recruited in the French population for the Three-City Study. Atherosclerotic plaques in the extracranial carotid arteries and CCA-IMT were measured using a standardized protocol. Results were tested for replication in another, younger, French population sample (EVA-Study, 1123 subjects). In the Three-City Study, increasing daily tea consumption was associated with a lower prevalence of carotid plaques in women: 44.0%, 42.5%, and 33.7% in women drinking no tea, 1 to 2 cups/d, and 3 cups/d (P=0.0001). This association was independent of age, center, major vascular risk factors, educational level, and dietary habits (adjOR=0.68[95%CI:0.54 to 0.86] for women drinking 3 cups/d compared with none). There was no association of tea consumption with carotid plaques in men, or CCA-IMT in both genders. In the EVA-Study, carotid plaque frequency was 18.8%, 18.5%, and 8.9% in women drinking no tea, 1 to 2 cups/d, and 3 cups/d (P=0.08).
Conclusion— In a large sample of elderly community subjects we showed for the first time that carotid plaques were less frequent with increasing tea consumption in women.
Our aim was to assess the relationship of tea consumption with common carotid artery intima-media thickness and carotid plaques in a large population-based sample of elderly subjects. Increasing daily tea consumption was associated with a lower prevalence of carotid plaques in women, independently of vascular risk factors and dietary habits.
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