Loneliness harms health like smoking fifteen cigarettes daily

Chronic loneliness and social isolation increase the risk of premature death by 29 percent, a danger comparable to smoking 15 cigarettes daily. This alarming finding comes from a 2015 meta-analysis by Julianne Holt-Lunstad, highlighting loneliness as a major, yet often overlooked, public health threat. It weakens the immune system, elevates blood pressure, and heightens inflammation, contributing to heart disease, stroke, and dementia.