Friendship by Lydia Denworth

The Evolution, Biology, and Extraordinary Power of Life's Fundamental Bond

A lively, research-driven exploration of the science behind human connections, this book synthesizes findings from neuroscience, psychology, epidemiology and animal behavior to show how friendships form, function and affect health across the lifespan; it explains the brain chemistry and evolutionary roots of companionship, documents the physical and mental-health benefits (and the harms of loneliness), surveys friendship development from childhood through old age and across species, and considers social and public-health implications while offering evidence-based insights about how to cultivate and sustain meaningful bonds.

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