At least, not yet. More studies are needed to follow the same people as they lose weight through diet and exercise, to see if the composition of their gut flora changes — as it did with the gastric bypass patients. What's more, notwithstanding the seemingly cause-and-effect link between gut flora and weight, that relationship can be deceiving; a third factor entirely may be causing both — a diet of highly processed foods, for instance, suggests Dr. David Katz, director of the Yale Prevention Research Center. What's more, says Katz: "Regardless of the variation of gut flora in the population, the entire population is getting heavy. So probiotics might tweak one's personal vulnerability to obesity, but they would not much move the big dial [on the obesity epidemic], " he says. Still, as anyone fighting the numbers on the scale knows, every little bit helps — even something a little as a bacterium.
至少,现在还不行。还需要做更多的试验。观察同一些人在节食和锻炼后他们的肠道菌群组合变化是否和那些胃旁路手术的病人的一样。 还有,尽管肠道菌群和减肥之间看似有因果关系,但这种关系也许具有欺骗性。耶鲁预防研究中心的大卫.卡茨说,可能有第三种因素同时导致了前二者,比如一份对都是高杀菌处理食物的食谱。他还说,“无视人们肠道菌群的种类变化,人们还是在变重,就算它们能减弱人对肥胖趋势,还是改变不了大趋势。”但那些和秤上表针战斗的胖子们还是要抓紧最后的稻草-哪怕这稻草只有细菌那么小。
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