Isolation, or social isolation, refers to a lack of social interaction, meaningful relationships, and connection with others. It can be physical, such as spending significant time alone or being separated from social networks, or emotional, where a person feels disconnected, unsupported, or lacking a sense of belonging even when surrounded by others. Social isolation is often characterized by both a low quantity and low quality of social contact and an absence of mutually rewarding relationships.
Isolation can be voluntary, when a person chooses to spend time alone, or involuntary, resulting from circumstances such as illness, disability, caregiving responsibilities, geographic location, social exclusion, or major life changes. Older adults may be particularly vulnerable due to retirement, declining health, reduced mobility, the loss of loved ones, or shrinking social networks. Young people can also experience isolation, especially during periods of social disruption, transition, or limited opportunities for in-person connection. The Mental Health Commission of Canada has noted that pandemic-related isolation contributed to increased loneliness and anxiety among many youths at a critical stage of social development.
Prolonged isolation can have significant impacts on both physical and mental health. Research has linked social isolation and loneliness to increased risks of heart disease, obesity, poor sleep, anxiety, depression, emotional distress, impaired executive functioning, and suicidal thoughts.
Strong social connections, meaningful relationships, and opportunities to contribute to one’s community can help protect against the effects of isolation. The Mental Health Commission of Canada highlights the importance of belonging, purpose, and mattering, recognizing that feeling valued, connected, and supported is essential to well-being across all stages of life. Programs that foster social participation, community engagement, and meaningful connection can help reduce loneliness and support mental health and healthy aging.
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