Loneliness can afflict anyone, whether young or old, rich or poor, highly-educated or illiterate, healthy or infirm. People who are physically isolated, such as those who work at home or in remote areas, are hospitalized or otherwise infirm, are often subject to loneliness. Equally painful is the subjective loneliness experienced by a shy or sensitive person, or by one who is, for whatever reason, alienated from society.
Health studies say that loneliness can disrupt sleep, increase stress, weaken the immune system, accelerate cognitive decline and frailty and is linked to heart disease and depression. They argue that loneliness has such a significant effect on mortality rates that it could be considered a public health threat more harmful than obesity and akin to smoking, high blood pressure, high cholesterol, obesity and lack of physical exercise.
Loneliness reached a peak in the early 21st century. Studies from immediately prior to the corona crisis report as much as 40% of the world's population feeling lonely. The situation became so dire that in 2018, former British Prime Minister Theresa May appointed a Minister of Loneliness. More recently, in the United States, Surgeon General Vivek Murthy issued an advisory on the dangers of loneliness combined with a new National Strategy to Advance Social Connection.
People who are isolated but healthy are twice as likely to die over the period of a decade or so as others with the same health. Men are at more danger than women.
Cigna, a U.S. medical insurer, based on an online survey with 20,000 adult respondents, reported in 2018 that most Americans are lonely. Surprisingly, the highest rates of loneliness were not found among the elderly, but in Generation Z (ages 18 to 22) and millennials (ages 20 to 35): nearly 50 percent of respondents said they sometimes or always feel alone or left out; just 53 percent have meaningful in-person social interactions on a daily basis; 27 percent rarely or never feel as though there are people who really understand them.
Industrial civilization, and particularly urban lifestyles, tend to force individuals into many superficial, apparently socializing, contacts, while other features of modern society tend to cause actual isolation. Such isolating features include the breakdown of the extended family, the erosion of family-centred values, and passive entertainment. Statist governments reduce individuals to anonymities, while technological progress exalts the intellect at the expense of the feelings. Smaller families, social mobility and uncontrolled urbanization decrease the opportunities for frequent, long-term and personal social interactions in a community context.
Man is experiencing a new loneliness; it is not in the face of a hostile nature which it has taken him centuries to subdue, but in an anonymous crowd which surrounds him and in which he feels himself a stranger. (Papal Writings, 14 May 1971).
Loneliness is not just a problem, it is a problem with enormous social consequence. Isolated, atomized subjects tend, especially under the influence of media and social media narratives, to suddenly coalesce into a new kind of group: a mass. This kind of group formation makes people radically incapable of thinking critically about the stories presented to them, willing to radically sacrifice everything they hold dear, and deeply intolerant of any voice that deviates of what the masses believe in.