压力确实会使头发变白（而且是可逆的）。一项新的研究心理压力导致头发灰白提供了定量证据。研究人员惊奇地发现，当压力消除后，头发的颜色可以恢复，这一发现与最近一项在老鼠身上进行的研究形成对比，该研究表明，压力诱发的白发是永久性的。

It's true: Stress does turn hair gray (and it's reversible)

It's true: Stress does turn hair gray (and it's reversible) -- ScienceDaily

1. Ayelet M Rosenberg, Shannon Rausser, Junting Ren, Eugene V Mosharov, Gabriel Sturm, R Todd Ogden, Purvi Patel, Rajesh Kumar Soni, Clay Lacefield, Desmond J Tobin, Ralf Paus, Martin Picard. Quantitative mapping of human hair greying and reversal in relation to life stress. eLife, 2021; 10 DOI: 10.7554/eLife.67437