Many old people, regardless of their domestic situation, experience unwanted loneliness feelings at some point. Unwanted loneliness beats when someone’s social relationships are someway poor. It is also a feeling that arises when someone’s social relationships are less satisfactory than that person would like.
Below you can find 2 articles in Spanish, referencing the phenomenon and the data on the spanish populations.
Read the article on unwanted loneliness in the Community of Madrid: https://www.comunidad.madrid/servicios/asuntos-sociales/soledad-no-deseada-personas-mayores-comunidad-madrid