Elderliness is a stage of human life and evolution naturally associated with reduced mental, physical, and psychological abilities (
1). The elderly population is increasing given the advancements in medical science (
2) and increased life expectancy (
3), which is called the silent revolution (
4). Studies suggest that the number of people aged 65 or over worldwide will double in the next 40 years, with 52% of this increased population residing in developing Asian countries (
5). Our country is no exception to this rule, given the increased elderly population in Iran. Iran is also moving toward an aging population due to reduced fertility, decreased mortality, and increased life expectancy. Iran's population over 65 increased from 3.9% in 1956 to 6.1% in 2016. It is predicted that the population over 65 in Iran will increase to 11% and 17% of the total population in 2036 and 2051, respectively. The elderly population of Iran will start increasing at a higher pace than in other regions and the world average after 2040, according to global estimations. Besides, it will exceed the global average elderly population increase by 2045 and the Asian average by the next five years. Therefore, paying attention to this population's health, mainly psychological health, is increasingly significant (
6).
Research results have revealed that the elderly suffer from significant emotional disorders and problems such as anxiety, particularly death anxiety (
7,
8). Death anxiety includes the thoughts, emotions, and fears associated with the end of life in which the individual experiences negative emotions, fear, and anxiety by thinking about death and dying (
9). Death anxiety is more prevalent in the elderly than in other age groups (
10,
11), but there are no accurate statistics on the prevalence of death anxiety in this age group. It appears that the elderly experience various emotions and stresses over their hospitalization or when their family takes care of them. Death anxiety can influence psychological health, particularly in the elderly (
12). Zeraati et al. conducted a study to compare depression and death anxiety in the resident and non-resident elderly in nursing homes in Tehran in 2016. The results showed that depression and death anxiety were significantly higher among the elderly living in nursing homes than among the non-resident elderly. Therefore, according to the living conditions of the elderly in nursing homes, periodic psychiatric examinations and psychological interventions are essential to treat depression, relieve anxiety, and promote the life quality of the elderly (
6). The increasing growth of the elderly and this age group's specific needs over hospital stays and outside the hospital, on the one hand, and the psychological and physiological changes in them, on the other hand, can make the elderly vulnerable to issues such as death, and death anxiety can influence this vulnerable group's life. Addressing death anxiety in the elderly population is imperative (
13) because the elderly can be prone to death anxiety and psychological disorders due to the conditions their families impose on them, the inabilities due to increased age, and their care needs not being met. Thus, attention to death anxiety in this age group can increase their abilities and improve their performance in all aspects of their lives (
14).