title: Social relationships and longevity.
mesh_terms: D000368:Aged; D005190:Family / Q000523:psychology*; D005260:Female; D033062:Friends / Q000523:psychology*; D006801:Humans; D007398:Interpersonal Relations; D008019:Life Style; D008136:Longevity; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D012944:Social Support