Tattooing has been practiced globally for thousands of years. From an evolutionary perspective, this tradition seems counterintuitive because it is a dermal injury that risks infection. Previous research indicates tattooing may habituate the immune system for subsequent stress, as with exercise or vaccination, an important benefit in high‐risk areas. Visible injuries through tattooing may be a form of costly honest signaling—consciously or unconsciously drawing attention to immunological quality.

中文翻译：

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人体艺术的进化适应：纹身是美属萨摩亚增强免疫反应的昂贵诚实信号。

纹身已经在全球范围内实践了数千年。从进化的角度来看，这种传统似乎违反直觉，因为这是一种有感染风险的皮肤损伤。先前的研究表明，纹身可能会使免疫系统适应随后的压力，例如运动或接种疫苗，这在高风险地区具有重要意义。纹身造成的明显伤害可能是昂贵的诚实信号的一种形式-有意识或无意识地引起人们对免疫学质量的关注。