The process isn't always smooth. Having too much earwax, or wax that is too dry or too sticky, can create a buildup. Much of that is genetically determined. 'When it comes to earwax, choose your parents well, ' says Richard Rosenfeld, chair of otolaryngology at SUNY Downstate Medical Center in Brooklyn.

这个过程并非总是一帆风顺。耳垢太多、太干或太黏都会导致耳垢堆积。这主要是由基因决定的。位于布鲁克林(Brooklyn)的纽约州立大学下州医学中心(SUNY Downstate Medical Center)的耳鼻喉科主任理查德?罗森菲尔德(Richard Rosenfeld)说：“在耳垢这个问题上，要选好父母。”

Wearing ear-bud headphones, hearing aids or ear plugs for long periods can also interfere with orderly extrusion.

长期戴耳塞式耳机、助听器或耳塞都可能影响耳垢的规律性排出。

When excess earwax hardens or gets pushed back down the canal, it can become impacted, which afflicts approximately 10% of children, 5% of healthy adults and up to 57% of older patients in nursing homes, according to the American Academy of Otolaryngology -- Head and Neck Surgery.

当多余的耳垢变硬或被挤回耳道下方时，可能会导致耳塞。根据美国耳鼻喉-头颈外科学会(American Academy of Otolaryngology-Head and Neck Surgery)的数据，儿童的耳塞发病率约为10%，健康成人的耳塞发病率约为5%，而养老院中的老人耳塞发病率高达57%。

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