CALIFORNIA: Persistent loneliness and social isolation may significantly increase the risk of developing type 2 diabetes, according to new research by the University of Southern California (USC). The study, published in the Journal of Aging and Health, reveals that older adults who frequently experience feelings of loneliness or social disconnection face a 34% higher risk of developing type 2 diabetes. Additionally, their blood sugar levels are 75% more likely to rise to abnormal levels.
The research analysed health data from 3,833 individuals aged between 60 and 84 years. According to the lead author, the findings are particularly concerning given the global trend of rapidly ageing populations. “These risks are not just emotional or psychological—they manifest physically, and in the form of chronic conditions like diabetes,” the study noted.
Importantly, the researchers distinguish between loneliness—a subjective feeling of being alone—and social isolation, which involves limited actual contact with others. Both have now been linked not only to mental health issues but also to a wide range of physical ailments, including heart disease, stroke, and weakened immune function.
Earlier studies support these findings. A January 2025 report by the University of Cambridge linked loneliness to increased risks of cardiovascular disease and stroke. Similarly, research from Harbin Medical University in China in 2023 found that loneliness and isolation contributed to early mortality through poor lifestyle habits and compromised immunity.
While researchers acknowledge more studies are needed, they argue the evidence is already strong enough to treat loneliness as a public health issue. “Loneliness is not merely a symptom of ageing—it is a major risk factor for medical decline,” said a senior USC researcher.
Public health experts, including Dr Sameena Khwaja from Lahore, are now urging governments—especially in countries like Pakistan—to implement policies that foster community engagement for the elderly. “We need inclusive social spaces, stronger intergenerational bonds, and public health strategies that prioritise emotional well-being,” she said.
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Globally, type 2 diabetes remains one of the most widespread chronic diseases, affecting over 400 million people. The new findings suggest that addressing emotional and social factors may be just as important as diet and exercise in combating this global epidemic.
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