Is it true that … we should eat 30 plants a week?

A study linked eating more than 30 kinds of plant food a week with greater gut-microbe diversity, but it did not prove that 30 is a magic number or that reaching the target improves health.

一项研究发现，每周食用30种以上植物性食物与更丰富的肠道微生物有关，但研究并未证明30是一个神奇的数字，也未证明达到这一目标能改善健康。