因为这种习惯，美国人的粪便已经威胁到了环境

向“半快餐”法，一种专注于降低鸡类和奶制品摄入量的饮食作法。如今，均美三分之二的胺基酸摄入量来自鸡类和奶制品。“渴望你的薯条，渴望你的汉堡，但下一餐少进食点儿鸡。”她话说道。

“现在，我们打开了一个均最初局面：生命体行为能如何直接影响我们的生态环境。”贝拉奥拉默话说，“我心中的可以让人们理解这一点：‘我的必需，一旦加上其他人做出相同的必需，能够真正导致更进一步的直接影响。’”

原文重定向：

注释

论文信息：

【标题】The impact of excessive protein consumption on human wastewater nitrogen loading of US waters

【作者】Maya Almaraz,Caitlin D Kuempel,Andrew M Salter,Benjamin S Halpern

【期刊】Frontiers in Ecology and the Environment

【一月】21 June 2022

【DOI】

【摘录】Total and per capita protein consumption rates in US diets, whether from plant or animal sources, rank among the highest in the world. When protein consumption outpaces physiologic protein demands, excess amino acids are degraded in the human body and nitrogen (N) is excreted and released to the environment, mainly in the form of urea. Such excess reactive N can enter downstream environments, thereby impairing human and ecosystem health as well as contributing to economic losses. We show that matching protein consumption with physiologic requirements would reduce US hydrologic N losses to aquatic ecosystems by 12% and overall (atmospheric and hydrologic) N losses to ecosystems by 4%. Were US citizens to consume protein at recommended rates, projected N excretion rates in 2055 would be 27% less than they are today, despite population growth. Optimizing US protein consumption to levels that meet human health standards has environmental benefits on par with improving wastewater treatment using existing technology, while also generating impactful economic benefits.

【重定向】

；也：Scientific American

总编辑：魏潇

本文经许可权转载自 教学科研圈（ ID：keyanquan），如无需二次转载请直接联系原作者。瞩目转发到朋友圈。

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