Mackinnon E S, Rao A V, Rao L G
Department of Medicine, Division of Endocrinology and Metabolism, Calcium Research Laboratory, St. Michael's Hospital, Canada.
J Med Food. 2009 Aug;12(4):829-35. doi: 10.1089/jmf.2008.0118.
Lycopene is an antioxidant associated with a reduced risk of chronic diseases common in women such as osteoporosis and cancer; however, no official recommendation for lycopene consumption exists, and intake data from Canadian women are limited. This study was designed to generate information about average lycopene intake in Canadian women of different ages. A cross-sectional study was conducted at St. Michael's Hospital in Toronto, Ontario, Canada. One hundred one women, between the ages of 25 and 70 years, who were not on any medications, were recruited to record their diet for 7 days. Statistical analyses were performed to compare the types of lycopene-containing foods consumed, associations between intake of lycopene and macro/micronutrients, and whether participant characteristics, such as body mass index, could predict lycopene intake. Average lycopene intake was 6.14 +/- 5.35 mg/day, which is higher than reported in other countries. Intake was similar among age groups but was highly variable. Raw tomatoes were the most frequently consumed source of lycopene, while participants with the highest lycopene intake consumed more cooked/processed tomato products than those with lower intake (P < .005). Participants 25-49 years old consumed more dried/powdered tomatoes (P < .05), pizza (P < .002), and ketchup (P < .10) than 50-70 year olds. Lycopene intake could not be predicted by any participant characteristics. In older participants, lycopene intake was positively correlated with intake of calcium, niacin, and vitamins A, D, and K (P < or = .05). These findings are significant to women's health and may contribute to the establishment of nutritional and health recommendations regarding consumption of lycopene by Canadian women to prevent chronic diseases.
番茄红素是一种抗氧化剂,与降低女性常见的慢性疾病风险有关,如骨质疏松症和癌症;然而,目前尚无关于番茄红素摄入量的官方建议,且加拿大女性的摄入量数据有限。本研究旨在获取不同年龄段加拿大女性番茄红素平均摄入量的信息。在加拿大安大略省多伦多市的圣迈克尔医院进行了一项横断面研究。招募了101名年龄在25至70岁之间、未服用任何药物的女性,记录她们7天的饮食情况。进行统计分析以比较所食用的含番茄红素食物的类型、番茄红素摄入量与常量/微量营养素之间的关联,以及参与者特征(如体重指数)是否能够预测番茄红素摄入量。番茄红素的平均摄入量为6.14±5.35毫克/天,高于其他国家的报告水平。各年龄组的摄入量相似,但差异很大。生番茄是最常食用的番茄红素来源,而番茄红素摄入量最高者比摄入量较低者食用了更多的熟制/加工番茄制品(P<0.005)。25至49岁的参与者比50至70岁的参与者食用了更多的干制/粉末状番茄(P<0.05)、披萨(P<0.002)和番茄酱(P<0.10)。任何参与者特征均无法预测番茄红素摄入量。在年龄较大的参与者中,番茄红素摄入量与钙、烟酸以及维生素A、D和K的摄入量呈正相关(P≤0.05)。这些发现对女性健康具有重要意义,可能有助于制定关于加拿大女性食用番茄红素以预防慢性疾病的营养和健康建议。