Department of Psychology, Swansea University, Wales, United Kingdom.
Nutr Rev. 2019 Nov 1;77(11):829-843. doi: 10.1093/nutrit/nuz031.
Although there is strong evidence that consumption of fruit and vegetables is associated with a reduced rate of all-cause mortality, only a minority of the population consumes 5 servings a day, and campaigns to increase intake have had limited success. This review examines whether encouraging the consumption of fruit juice might offer a step toward the 5-a-day target. Reasons given for not consuming whole fruit involve practicalities, inconvenience, and the effort required. Psychologically, what is important is not only basic information about health, but how individuals interpret their ability to implement that information. It has been argued that fruit juice avoids the problems that commonly prevent fruit consumption and thus provides a practical means of increasing intake and benefitting health through an approach with which the population can readily engage. Those arguing against consuming fruit juice emphasize that it is a source of sugar lacking fiber, yet juice provides nutrients such as vitamin C, carotenoids, and polyphenols that offer health-related benefits. Actively encouraging the daily consumption of fruit juice in public health policy could help populations achieve the 5-a-day recommendation for fruit and vegetable intake.
尽管有强有力的证据表明,食用水果和蔬菜与降低全因死亡率有关,但只有少数人每天食用 5 份,而增加摄入量的运动收效甚微。本综述探讨了鼓励饮用果汁是否可以朝着每天 5 份的目标迈进。人们不食用完整水果的原因涉及到实际情况、不便和所需的努力。从心理学的角度来看,重要的不仅是关于健康的基本信息,还有个人如何解释自己实施这些信息的能力。有人认为,果汁避免了通常阻止人们食用水果的问题,因此通过一种人们容易接受的方法,提供了一种增加摄入量和促进健康的实用手段。反对饮用果汁的人强调,果汁是一种不含纤维的糖源,但果汁提供了维生素 C、类胡萝卜素和多酚等营养物质,这些营养物质对健康有益。在公共卫生政策中积极鼓励人们每天饮用果汁,可能有助于人们实现每天摄入 5 份水果和蔬菜的建议。