The Silent Epidemic: Loneliness

What is Loneliness?

Loneliness is defined as a subjective experience where one perceives a discrepancy between their actual and desired levels of social relationships. In essence, loneliness is the emotional state of feeling cut off from others, even when they are nearby.

It is an indicator that a person’s social needs, such as friendship or social support, are not being met. It can also be described as a signal of our innate human need, just like thirst and hunger. That is because the human brain is hard-wired to be connected to other people for survival, cooperation, protection, having a sense of belonging, and making emotional bonds. When these social needs are not met, it creates immense distress in our physical and mental health, just like when the needs of hunger and thirst are not met. Humans are social creatures, and being socially connected is not considered an option, but rather a basic need. Loneliness is increasingly recognized as a major public health concern worldwide, affecting both developed and developing countries. It is associated with mortality. A plausible reason for this may be related to emerging societal trends affecting the way we relate, communicate, and function in our social environment.

How Common is Loneliness Today?

Loneliness is widespread. According to the BBC Loneliness Experiment, which was conducted in around 237 countries, findings show that loneliness increased with individualism, decreased with age, and was greater in men than in women. It was also found that age, gender, and culture interacted to predict loneliness. Research indicates that younger men in individualistic cultures are the most vulnerable to loneliness. International surveys reveal that significant numbers of children, young adults, and older adults report feeling lonely persistently. The rise of remote work, social media use, and urban living without close community ties has made loneliness more noticeable in recent years.

Risk Factors

The risk factors associated with loneliness include both individual and social factors, along with the number of social resources that are available for an individual.

Individual Factors

• Living alone or social isolation.
• Advanced age (widowhood, retirement, reduced mobility).
• Adolescence/young adulthood (identity changes, transitions).
• Poor physical or mental health (chronic illness, depression, anxiety).
• Low self-esteem or poor social skills.
• Limited income or financial stress.

Social & Environmental Factors

• Loss of close relationships (bereavement, divorce, relocation).
• Lack of supportive networks (friends, family, community).
• Caring responsibilities that reduce social time.
• Cultural or language barriers in new settings.
• Stigmatization or discrimination (minority status, disability).

Effects on Physical Health

Poor sleep reduced daily functioning and increased cardiovascular issues, such as higher cholesterol and high blood pressure, which are correlated with higher levels of loneliness.

Loneliness is associated with increased cortisol levels, which causes chronic stress.

Loneliness is also associated with the incidence of breast and colorectal cancer, and Multiple sclerosis (MS), which is a chronic autoimmune disease.

Higher levels of loneliness were associated with accelerated cognitive decline and increased risk for Alzheimer's disease and dementia in older adults. This is because higher levels of loneliness cause structural changes in the brain’s grey and white matter.

Loneliness causes changes to the physical brain structure. Functional MRI of the brain has shown that lonely people perceive social situations differently compared to non-lonely people. For example, lonely people differentiate negative social words faster than those who are less lonely.

Loneliness also leads to various physical disorders like diabetes, autoimmune disorders like rheumatoid arthritis, lupus, and cardiovascular diseases like coronary heart disease, obesity, physiological aging, cancer, poor hearing, and poor health.

Effects on Mental Health

Loneliness is associated with more severe mental health issues, including social anxiety, depression, and paranoia.

Loneliness also causes an increase in psychiatric conditions like alcoholism, potential for abuse, and suicide ideation. Research on suicide has revealed that there is a strong association between suicide ideation, parasuicide, and loneliness. The prevalence of suicide ideation and parasuicide rises with the degree of loneliness. Further, the peak season for loneliness has been reported to be winter and spring, the same season for which peak incidence of suicide has been reported.

Loneliness affects a person’s emotional regulation. This involves a coping strategy to manage difficult emotions. People who struggle to perceive, understand, and manage emotions also reported higher levels of loneliness.

Loneliness and isolation increase the risk of social vulnerability, which in turn is closely linked to physical frailty and higher mortality.

Practical Guidelines to Decrease Loneliness

Loneliness has serious consequences for the mental and physical well-being of people. Therefore, it is imperative to intervene at the right time to prevent loneliness. Helpful strategies include enhancing social skills, providing support to others, creating opportunities for interaction, and addressing maladaptive social thoughts through counseling. CBT can help individuals recognize their maladaptive thoughts and how to replace them with balanced thoughts.

Here are some practical interventions to help reduce loneliness across age groups:

• Strengthen existing relationships – Schedule regular calls or visits with family, friends, or neighbours.
• Join groups or clubs – Participate in community classes, hobby groups, sports, or volunteer organizations to meet new people.
• Volunteer – Helping others creates purpose and social contact.
• Use supportive technology – Video calls, online support groups, and moderated social platforms can maintain or build connections.
• Develop social skills – Practice active listening, empathy, and communication skills to make interactions more rewarding.
• Create a daily routine – Including social activities, exercise, and time outdoors to improve mood and energy.
• Seek professional support – Counseling, support groups, or group therapy can help address underlying issues like anxiety, grief, or low self-esteem that contribute to loneliness.
• Adopt or care for a pet – For many, animal companionship reduces feelings of isolation.
• Engage in meaningful activities – Pursue hobbies, learning, or spiritual practices that provide purpose and opportunities for social interaction.