nonagenarians

A nonagenarian is a person aged between 90 and 99 years old. The term is commonly used in demography, gerontology, and medical literature to describe late adulthood before the threshold of a hundred.

Global trends show that nonagenarians are increasing as populations age, reflecting lower mortality at older ages and better medical care. However, the distribution of nonagenarians varies by country and region, with higher concentrations in high-income nations and slower growth in some developing areas.

Health and functioning among nonagenarians are highly variable. Some individuals maintain independence and good functional status, while others experience multiple chronic conditions, frailty, or cognitive impairment. Healthcare needs often focus on managing chronic diseases, maintaining mobility, and supporting daily living activities.

Nonagenarians figure in longevity research as one of the oldest age groups before centenarians; studies examine genetics, lifestyle, social determinants, and resilience factors that support survival to advanced ages.

Societal implications include caregiving demands, pension and healthcare costs, and policy considerations to support aging populations. Cultural perceptions of nonagenarians range from admiration for longevity to concerns about aging-related isolation.