The improved medical care available in an industrial society has virtually eliminated these diseases, but other formerly rare diseases, such as cancer, heart problems and mental disorders have multiplied.
但在工業社會裡，由於療醫進步、衛生改善，細菌性傳染病已漸被有效控制；繼之而起的，是由一些有害人體的化學物質或噪音、震動等物理因素引發的慢性疾病，例如癌症、心臟病、腦血管疾病及精神官能症等。