Why Do Some Adults Never Have Sex? A New Study Reveals a Surprising Phenomenon
For many, sex is considered a natural part of adult life—so much so that it’s often taken for granted that everyone will experience it sooner or later. But that’s not always the case. A new international study, based on hundreds of thousands of participants, sheds light on an often-overlooked aspect of human sexuality: the fact that some adults have never had sex.
The research compared people who had never engaged in sexual activity with those who had, and found that the differences don’t come down to a single cause. Instead, they result from a complex interplay of genetic, environmental, physical, and psychological factors. Yet, despite the breadth of data, many questions remain unanswered.
Not Always by Choice
For some adults—often described as asexual—a lack of sexual desire comes naturally and isn’t perceived as a problem. For others, however, the situation is more difficult: they long for intimacy but struggle to find a suitable partner. This can lead to loneliness, social anxiety, and even financial strain, especially when living alone is more expensive.
In more extreme cases, frustration can manifest in problematic ways, such as the rise of so-called “incels” (involuntary celibates), an online subculture frequently associated with anger and radicalization.
The Numbers Behind the Study
Researchers analyzed data from over 400,000 people in the UK and around 13,500 in Australia, discovering that about 1% of men and women had never had sex.
Some striking correlations emerged:
- In the UK, men who had never had sex were more likely to live in areas with fewer women.
- For both men and women, sexual inexperience was more common in regions with high economic inequality.
On a personal level, sexually inexperienced adults reported feeling lonelier, more anxious, and less happy, as well as having fewer social connections. Many said they had no one with whom to share their innermost thoughts.
And yet, there were unexpected positives: these individuals were less likely to consume alcohol or drugs, tended to be more highly educated, and often displayed traits reminiscent of the stereotypical “nerd” profile—such as early use of glasses and stronger focus on academics, according to Science Alert.
The Role of Genetics
The study also explored genetic influences, revealing that around 15% of the variation in sexual experience can be attributed to genetics. No single “sex gene” exists; rather, the outcome appears to be the result of many small genetic factors combined.
Interestingly, sexual inexperience was genetically associated with higher levels of education and intelligence, as well as personality traits like introversion or features linked to the autism spectrum. By contrast, genetic risks for depression, anxiety, and addiction were lower.
A Complex Reality Worth Understanding
The authors emphasize a crucial point: not all adults who have never had sex experience it in the same way. For some, it’s a matter of choice. For others, it’s an involuntary reality. That distinction underscores the need for further research into the roles of desire, social context, and culture.
Ultimately, the goal isn’t to judge but to better understand a complex phenomenon that has real implications for psychological and social well-being. Because when we talk about sex—or the absence of it—we’re also talking about loneliness, relationships, health, and quality of life.
