Loneliness is an unwelcome feeling of lack or loss of companionship, which happens when there is a mismatch between the quantity and quality of the social relationships that we have, and those that we want (Perlman and Peplau, 1981)
23% of people aged 75 and over who live alone do not see or speak to someone every day.
13% of people aged 55 and over only speak to someone three or 4 days a week.