Washington D.C.: A new medical study from the United States has revealed that loneliness and social isolation not only affect mental health but can also seriously impact physical well-being. Researchers from the University of Southern California found that individuals who lack social connections have a 34% higher risk of developing Type 2 diabetes. Furthermore, they are 75% more likely to experience abnormal increases in blood sugar levels.
The study analyzed the medical records and social behavior patterns of 3,833 individuals aged between 60 and 84. Experts noted that while the causes of loneliness may vary, the outcomes tend to be consistent—disruption of bodily systems and a heightened risk of chronic diseases.
Researchers highlighted that older adults who are disconnected from family and friends are more susceptible not only to diabetes but also to high blood pressure, heart disease, stroke, and weakened immunity.
This is not the first time the physical impacts of loneliness have been studied. Earlier studies from Cambridge University (UK) in January 2025 and Harbin Medical University (China) in June 2023 had also linked loneliness to negative effects on the heart, brain, and immune system.
According to health experts, individuals suffering from loneliness often experience poor eating habits, physical inactivity, and elevated stress levels. These factors weaken their immune systems, making them more vulnerable to illnesses.
The study emphasizes the need to treat loneliness as a serious medical issue, as it significantly increases the likelihood of both mental and physical health problems.
It is worth noting that previous studies have also confirmed a strong connection between social relationships and physical health. This latest research now positions loneliness as a serious risk factor for life-threatening conditions like diabetes.
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