每天一杯咖啡，真能“续命”？哈佛大学30年追踪研究：喝咖啡或有助于女性健康衰老

Core Viewpoint - A long-term study from Harvard University suggests that moderate caffeine consumption, particularly from coffee, may be linked to healthier and longer lives for middle-aged women [2][4]. Group 1: Research Overview - The study, led by Professor Hu Pingchang from Harvard's Chan School of Public Health, tracked 47,513 women over 30 years, starting in 1984, collecting detailed dietary and lifestyle information [4][5]. - The core question of the research was how caffeine intake habits in middle age (ages 45-60) affect health in later years [5]. Group 2: Definition of Healthy Aging - The research team defined "healthy aging" strictly, requiring participants aged 70 and above to meet several criteria, including the absence of major chronic diseases and the ability to perform daily activities independently [6][7][8]. Group 3: Key Findings - Among the 3,706 women who achieved "healthy aging" by 2016, the average daily caffeine intake was about 315 mg, primarily from caffeinated coffee [10]. - Drinking an additional small cup (approximately 120ml) of caffeinated coffee daily was associated with a 2%-5% increased probability of achieving "healthy aging" [12]. - The study found no significant association between tea or decaffeinated coffee and improved "healthy aging" probabilities, while consuming caffeinated cola was linked to a 20%-26% decrease in the likelihood of achieving "healthy aging" [12]. Group 4: Research Significance - This study is notable for being the first to evaluate the comprehensive impact of coffee on multiple aging-related health aspects over a 30-year period, highlighting the unique role of caffeinated coffee [13][14]. Group 5: Recommendations - It is advised to choose caffeinated coffee for potential health benefits, with a recommended limit of no more than 2 cups (approximately 480ml) per day [17][18]. - The benefits of coffee are considered moderate and should be part of an overall healthy lifestyle, including balanced diet and regular exercise [19]. - Individuals sensitive to caffeine or with specific health conditions should consult with healthcare providers regarding coffee consumption [20].