Association of mainly vegetarian and vegan diets with loneliness, social isolation and social withdrawal in a German population survey. - Hajek, André; Gyasi, Razak M.; Pengpid, Supa; Peltzer, Karl; Kostev, Karel; Soysal, Pinar; Kotwal, Ashwin; Smith, Lee; Yon, Dong Keon; König, Hans-Helmut (PLoS ONE, 2026)