Schrenk is an anthropologist at the University of Nevada, Las Vegas.

施伦克是内华达大学拉斯维加斯分校的一名人类学家。

" It had long been assumed healthcare is a newer invention, " Schrenk said in an email.

“长期以来，人们一直认为医疗保健是一项较新的发明。”

But this study adds to growing evidence that humans started caring for each other's health much earlier than scientists had thought, said Alecia Schrenk.

但阿莱克西亚·施伦克说，这项研究提供了更多证据表明，人类开始关心彼此健康的时间比科学家们认为的要早得多。