A recent study discovered that greater sleep health was linked to lower levels of loneliness, with the association being stronger among younger persons.

The findings of the study were presented at the SLEEP 2024 annual meeting. The findings show that higher sleep health is related to significantly lower total, emotional, and social loneliness.

Better sleep health was associated with lower total and emotional loneliness across all ages, however, this association was higher in younger persons. However, age did not influence the relationship between sleep health and social loneliness.

"Loneliness is an urgent public health crisis, and there is a pressing need for providers to understand better and treat it," said lead author and principal investigator Joseph Dzierzewski, who has a doctorate in clinical psychology and is vice president of research at the National Sleep Foundation in Washington, D.C.

"Our results highlight the important role that sleep plays in understanding loneliness across the adult lifespan. Perhaps efforts to improve sleep health could have a beneficial effect on loneliness, especially for young people."

According to the American Academy of Sleep Medicine, sleep is essential to health. The AASM and the Sleep Research Society recommend that adults sleep seven hours per night regularly to promote optimal health, productivity and daytime alertness.

The study involved 2,297 adults with a mean age of 44 years; 51 per cent were male. Participants completed an online sleep health questionnaire and loneliness scale. The researchers analysed the results using correlation and linear regression analyses along with moderation analyses.

In 2023 an advisory from the U.S. Surgeon General warned about a public health crisis of loneliness, isolation, and lack of connection. It noted that even before the onset of the COVID-19 pandemic, approximately half of U.S. adults reported experiencing measurable levels of loneliness.

According to the authors, efforts and programs that aim to reduce loneliness should include an emphasis on promoting sleep health, especially in younger adults.

"Why younger adults might experience more sleep-related benefits to loneliness than older adults is unknown and intriguing -- certainly worth further investigation," Dzierzewski said.