Such problems as cancer, heart attack, or mental disability are very likely to bother you in the future.

disability 是由前缀 dis-（表示"否定、缺乏"）和 ability（能力）组成的复合名词，字面意思是"缺乏能力"。在医学语境中特指"残疾"，指身体或精神功能上的障碍或缺陷。