Why do some people feel lonely even when they are loved?

How does someone feel lonely while being deeply loved? How does someone feel unsupported while living in a joint family? Despite partners, families and friends, many adults feel nobody truly knows them. As loneliness draws growing global concern, this paradox deserves attention. While technology, urbanisation and changing social structures all play a role, growing evidence suggests that its roots may begin much earlier — in childhood.The World Health Organization estimates that one in six people worldwide experience loneliness, with significant consequences for health and well-being. The report highlighted that loneliness is linked to around 100 deaths every hour globally.One of the largest studies ever conducted on loneliness, led by Julianne Holt-Lunstad and colleagues, and published in Perspectives on Psychological Science in 2015, analysed data from more than 3.4 million participants and found that loneliness was associated with a 26% higher risk of premature mortality. Loneliness has also been linked to heart disease, depression, weakened immunity, disturbed sleep and cognitive decline. These findings tell us why loneliness matters. But they do not explain why two people living in similar circumstances experience relationships so differently.The India storyIn India, we often assume that close-knit families protect against loneliness. However, many adults still feel emotionally isolated despite living with family and appearing socially connected. Young adults are moving away for education and work, traditional neighbourhood networks are weakening, and older adults are increasingly living alone. These changes undoubtedly contribute to loneliness. But they do not explain why many people feel emotionally alone even while surrounded by loved ones. Emotional loneliness often starts within families when people never feel safe enough to reveal who they truly are.While researching Adverse Childhood Experiences (ACEs) and their long-term consequences, one observation repeatedly stood out. Many adults described a quiet, persistent loneliness that had little to do with the number of people in their lives. Childhood adversity is often imagined as dramatic — abuse, violence. Yet much of it leaves no visible mark. A child who grows up feeling emotionally unseen and criticised, learns to become invisible. | Photo Credit: Getty Images A child who grows up feeling emotionally unseen, criticised rather than comforted, or accepted only when meeting expectations, gradually learns to become invisible, adapting to cope. Some adapt by creating an external persona that appears outgoing and entertaining. These adaptations may help children survive difficult environments, but they can later become barriers to intimacy, trust and genuine connection.Among ACEs, interpersonal experiences such as emotional neglect and peer isolation may be where adult loneliness begins. Long before adulthood, they shape a child’s expectations of relationships. Children learn to protect themselves by hiding vulnerability. Adults may continue using the same strategy long after the threat has passed.Our recently published study among Indian adults found that ACEs were strongly linked to lasting difficulties in managing emotions, self-worth and relationships — the kind of struggles often seen in people carrying deep, unresolved trauma. Childhood experiences accounted for nearly half of the variation in these difficulties. This suggests that loneliness is not always a matter of limited social contact; it may also reflect deeper disruptions in the capacity to trust, feel safe and experience belonging. Our findings suggest loneliness extends beyond health, affecting well-being, relationships and quality of life.This distinction is important to understand since it shapes how we respond. Public health initiatives often encourage people to socialise more, join community groups or spend less time online. These are worthwhile. However, for someone whose nervous system has learnt that closeness feels unpredictable or unsafe, simply increasing social contact may not reduce loneliness.What emotional safety looks likeBy contrast, children who grow up feeling emotionally safe, accepted and supported are more likely to develop a lasting sense of trust and belonging that protects against loneliness later in life. Recovery often begins with relationships in which people no longer feel they must hide who they are.This is not about blaming parents. Most caregivers do their best with the emotional resources they received. Understanding these patterns is not about assigning guilt. It is about recognising how emotional experiences pass from one generation to the next, and how they can be transformed.Loneliness affects health, productivity, relationships and healthy ageing. In a country with a large working population under 35, investing in children’s emotional well-being is not only a mental health priority, but also a long-term social and economic investment. As India strengthens its commitment to mental health, recognising the role of early emotional experiences offers an opportunity to invest in prevention, not only treatment. Instead of asking only “Why am I lonely?”, we might also ask, “When did I first learn that I had to face my feelings alone?” For many people, that offers a more compassionate understanding of why connection can feel so difficult.When a child grows up around adults who stay calm amidst chaos, and who accept and help them navigate difficult emotions, the child feels accepted and confident. For this, adults need to work on their own trauma.If India is serious about addressing its growing loneliness crisis, the conversation must extend beyond technology and changing lifestyles. To tackle loneliness, we must begin where connection begins: childhood.The writers are co-authors of What Happened to Me? vs What’s Wrong with Me?: Indian Perspectives on Childhood Trauma and Recovery (Penguin Random House India).