noun
adult disease; lifestyle disease
Dated medical term for diseases common in middle-aged and older adults, such as cancer, heart disease, and diabetes. Now often replaced by 生活習慣病 (lifestyle-related disease) in official contexts, but still understood.
See also: 生活習慣病
Regular health checkups are important for preventing adult diseases.
かつて「成人病」と呼ばれていた病気の多くは、今では「生活習慣病」と言われています。
Many diseases once called 'adult diseases' are now referred to as 'lifestyle diseases'.