Want to stay alone? It might cause this disease

Loneliness is more than just a feeling—it’s a silent epidemic that affects millions worldwide.

As per the data gathered by WHO, 1 in every 4 older adults experiences social isolation.

While some people prefer solitude, a long term of isolation or living in loneliness can have severe impacts on physical and mental health.

Various studies show that loneliness can lead to a range of chronic diseases, influencing both longevity and quality of life.

Here is how staying alone can harm your health.

Loneliness can greatly increase the risk of heart-related conditions like hypertension, heart disease, and stroke. When people feel isolated, their stress levels often rise, leading to higher blood pressure and inflammation. These factors strain the heart, making it more vulnerable to disease. As per a study done in 2018, social isolation and loneliness were linked to higher risks of stroke (32%) and coronary heart disease (29%) respectively. Research also suggests that loneliness triggers behaviours like poor diet and lack of exercise, further exacerbating cardiovascular risks.

Prolonged loneliness is linked to unhealthy habits, including overeating, sedentary lifestyles, and disrupted sleep patterns, all of which contribute to the development of Type 2 diabetes. Social isolation may also influence how the body regulates blood sugar due to chronic stress, increasing the likelihood of insulin resistance.

Loneliness is a leading cause of mental health struggles. It can lead to depression, anxiety, and even suicidal thoughts. According to a study done in 2024, loneliness and lack of social and emotional support are associated with depression and stress. People who live alone or feel socially disconnected often experience feelings of worthlessness and sadness, which can spiral into clinical depression. Social interactions act as a buffer against stress; their absence amplifies anxiety and emotional distress.

Loneliness has been linked to cognitive decline and a higher risk of dementia. Studies reveal that isolated individuals often experience a faster decline in memory and thinking abilities. Lack of social stimulation may reduce neural activity, weakening connections in the brain that are essential for cognitive health.

Chronic loneliness is associated with a higher risk of premature death. It can weaken the immune system, making individuals more susceptible to infections and illnesses. The 2018 study also suggests that loneliness has a similar impact on mortality as smoking or obesity. Addressing loneliness is not just about mental well-being—it’s about extending life expectancy.

Understanding the health risks associated with loneliness is a crucial first step, but taking action is equally important. Strengthen your social connections by joining community groups, rekindling old friendships, or engaging in hobbies that bring people together. Seeking professional help, such as therapy or counseling, can also make a significant difference in managing feelings of isolation.