The world's population is aging at a remarkable rate. The percentage of the world's population aged 65 and over was 5.1% in 1950, was 8.3% in 2015, and will increase to 17.8% by 2060 (United Nations, 2017). In this aging society, intergenerational conflicts between the elderly and the rest of the population are frequently observed in many workplaces and nursing care (Binstock, 2010). Anti-elderly discriminatory attitudes held by non-elderly people have been examined as one of the major causes of such intergenerational conflicts (North and Fiske, 2013). Specifically, the elderly is often perceived as incompetent and stubborn (McKenzie and Brown, 2014). Non-elderly people may also hold the discriminatory view that the elderly should pass down any resources, avoid excessive consumption of any shared social resources, and not behave as if they were younger (North and Fiske, 2013). These anti-elderly discriminatory attitudes lead to a decrease in the quality of life of the elderly (Levy et al., 2000), a disregard for the will of the elderly (Vitman et al., 2014), and an inhibition of the formation of a harmonious intergenerational society (Ishii and Tadooka, 2015). Based on the above, the affirmation of attitudes toward the elderly is an important issue in psychological research. This opinion paper will begin with a broad overview of the interventions that have been implemented to reduce anti-elderly discriminatory attitudes. Then, an important perspective specific to a social group of the elderly, which have not been sufficiently paid attention to, is pointed out; all people will eventually belong to a social group of the elderly. As a theory that incorporates this perspective, Levy's (2009) stereotype embodiment theory (SET) will be introduced, and a typical factor (i.e., subjective time to become elderly) that should be focused on in future interventions to reduce anti-elderly discriminatory attitudes, will be discussed. In this paper, the fact that we all become elderly is focused on, and this mainly refers to healthy aging, not pathological aging.