Study: Global loneliness epidemic linked to serious physical and mental health risks

Nearly a quarter of the world’s population experiences significant loneliness, according to a groundbreaking global survey by Gallup. The research highlights the severe physical and mental health consequences associated with these feelings.

Gallup’s first international survey on loneliness found that 23 percent of respondents felt lonely “a lot” the previous day. This group is 36 percentage points more likely to report feelings of sadness and 20 points more likely to experience anger.

Loneliness is also linked to increased physical pain, anxiety, and stress, with individuals who feel lonely being 26 percentage points more likely to report anger or pain, and 31 and 30 points more likely to experience anxiety and stress, respectively.

Loneliness varies by country and age group. Older adults, particularly those over 50, are generally more prone to loneliness, though younger people in China and the U.S. report higher levels of loneliness compared to their older counterparts. The survey identified Estonia, Vietnam, Kosovo, and Kazakhstan as having the lowest levels of loneliness, with only about 10 percent of people reporting such feelings. In contrast, Iceland, Poland, Slovenia, and Taiwan reported slightly higher rates at 11 percent.

Despite advancements in technology, such as social media, which theoretically should enhance connectivity, these platforms may inadvertently contribute to loneliness and mental health issues.

A study published in Gamma Psychiatryfound that teenagers who spend more than three hours a day on social media face heightened risks of loneliness, depression, and even suicide. In 2023, U.S. Surgeon General Vivek Murthy raised concerns about the detrimental effects of social media on young users and highlighted loneliness as a growing public health issue linked to cardiovascular disease, dementia, and premature death.

Changes in family dynamics and social structures in affluent countries also contribute to rising loneliness. With shrinking family sizes and an increased tendency to place elderly individuals in nursing homes, many older adults experience isolation. Research from Harvard University found that chronically lonely individuals over 50 are 56 percent more likely to suffer a stroke compared to their peers.

In response to the loneliness crisis, some countries, including Japan, South Korea, and the U.S., have introduced robotic companions for seniors. These AI-powered robots can engage in conversations and even mimic the voices of loved ones to provide comfort and reduce feelings of isolation.

However, Murali Duraiswamy, a professor of psychiatry and geriatrics at Duke University, notes that while robots can offer temporary relief, genuine human interaction remains the best solution for loneliness.

Yet, another survey found that employees using AI at work are more likely to experience loneliness and sleep difficulties, highlighting a complex relationship between technology and social well-being.

The increasing recognition of loneliness as a serious health issue underscores the need for more effective strategies to address this pervasive problem and improve overall quality of life.