Foreword: symposium on beverages and health.
Foreword: symposium on beverages and health.
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前言:饮料与健康研讨会。
DOI:
10.1016/j.physbeh.2010.02.011
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发表时间:
2010
影响因子:
2.9
通讯作者:
Mattes,RichardD
中科院分区:
文献类型:
--
作者:
Mattes,RichardD
In science, new findings are rarely as good or as bad as they first appear or as expressed by those viewing them in isolation. The issue of the role of beverages in a healthful diet is a case in point. People drink for myriad reasons. The most fundamental is to meet hydration needs and beverages presently provide about 80% of that requirement (Food & Nutrition Board). Despite dietary (1, 2) and sales (3) data indicating beverage consumption has increased over the past three decades, there is evidence that hydration needs are not adequately met in segments of the population (4) especially when under heat, exercise and gastrointestinal stress (5-10). Thus, beverages, in any form (11), may help to address this problem. Additional functions of drinking include aiding chewing, swallowing and intestinal passage of foods, provision of sensory stimulation and facilitation of social interactions. Beverages also deliver nutrients (eg, calcium in milk, protein in meal replacement products) and other compounds (eg, antioxidants in tea and wine; caffeine in teas, coffee, cola; ethanol in beer, wine and spirits; electrolytes in sports beverages) associated with reduced risk of chronic diseases. If not abused (eg, ethanol), there is little to criticize on this score. Their efficiency at delivering energy can also be an advantage in some populations (eg, individuals with early satiety such as the elderly or selected patients with cancer or HIV). However, this is a role that has attracted more concern than commendation due to the greater issue, in terms of individuals affected, of overweight/obesity.The contribution of beverages, primarily sweetened energy-yielding varieties, to positive energy balance and weight gain has engendered fierce debate. As is often the case with nutrition issues, the scientific literature is divided. Recent reviews and meta-analyses support (12-14) and refute (15, 16) a role for beverages in weight gain. A good deal of the controversy stems from the narrow focus of most reviews in terms of the types of evidence or sub-groups (eg, children (15) versus adults (12)) of the population included, so the bases of comparisons are limited and not easily extrapolated to the general population. Reviews of the totality of the data (eg, including observational data, studies of appetite and acute dietary compensation, longterm interventions) more strongly implicate beverage consumption in overweight/obesity (13, 14). Nevertheless, in the absence of a clear science-based consensus, and with a high level of consumer interest, the media has trumpeted sequentially published findings, primarily those