A new study finds persistent loneliness taking a toll on aging brains and significantly raising a person's odds for dementia.

People in their late teens experience an increased sensitivity to threats after just a few hours left in a room on their own – an effect that endures even if they are interacting online with friends and family.

Loneliness and isolation among older adults have returned to pre-pandemic levels, but over one-third remain affected. Vulnerable groups, including those with poor health, face higher risks.

A large population study links social disconnectedness—especially loneliness—to higher rates of mental illness and other major health problems.

July 10 (UPI) -- Loneliness dramatically increases a person's risk of depression and poor health, a new study says.

A study of U.S. adults finds that loneliness is linked to feeling like a burden in close relationships. The research also highlights how internal physiological states—such as heart rate variability—may shape how individuals cope with loneliness and self-doubt.

Loneliness and social isolation are linked to a heightened risk of death from cancer as well as from all causes among those with the disease, finds a pooled data analysis of the available research published online in the open access journal BMJ Oncology.

The prospect of remaining single for years can make people more willing to date someone with a dealbreaker. This new research suggests the simple expectation of being alone can lead individuals to compromise their standards.