Given the important role that nutritional science plays in global food and health policy, some of the key uncertainties in nutrition research that policy makers should take into consideration are outlined here.

中文翻译：

---

人类营养研究的不确定性

鉴于营养科学在全球食品和卫生政策中的重要作用，此处概述了决策者应考虑的营养研究中的一些关键不确定性。