title: Loneliness and old age.
mesh_terms: D000367:Age Factors; D000368:Aged; D000375:Aging; D004644:Emotions; D005191:Family Characteristics; D005260:Female; D006801:Humans; D008132:Loneliness; D008297:Male; D008875:Middle Aged; D012179:Retirement; D012934:Social Isolation