The Numbers Are Not a Typo

Let's start with the data, because the data is the kind that makes you read it "twice".

In a survey of thirty-seven countries measuring sexual frequency, Japan ranked last. Not close to last. Last by a margin significant enough to constitute a different category entirely — with only 27 per cent of Japanese people reporting sex more than once a week, compared to 55 per cent in the United Kingdom, which came in second to last. A 2024 survey found that 64.2 per cent of married Japanese respondents described their marriages as sexless. A separate study found that approximately half of the Japanese population remains sexually inexperienced into their mid-twenties, and roughly one in ten has no sexual experience at all upon reaching their thirties.

Japan is, by every available measure, the least sexually active wealthy nation on earth. And the gap between Japan and everywhere else is not narrowing. It is growing.

The question that follows is not "is this true" — the data is extensive, consistent, and has been accumulating for decades. The question is why. And the answers, when you dig into them, reveal something about modern Japan that goes considerably deeper than bedroom statistics.

The Herbivore Generation

Around 2008, a Japanese columnist named Maki Fukasawa introduced a term that would spend the next decade bouncing around the world's media: sōshoku-kei danshi (草食系男子) — herbivore men.

The term described a generation of young Japanese men who had, apparently, lost interest in the pursuit of women. They were not gay. They were not celibate by religious conviction. They simply did not seem particularly motivated by sex, romance, or the traditional masculine project of conquest and partnership. They preferred their own company, their hobbies, their anime and manga, their carefully curated personal spaces. Relationships, with all their attendant demands, obligations, and potential for rejection, were more trouble than they were worth.

The term was intended as cultural observation. It turned out to be demographic prophecy.

By 2011, surveys found that 61 per cent of unmarried Japanese men and 49 per cent of unmarried women aged eighteen to thirty-four were not in any romantic relationship at all — not dating, not casually involved, not looking. A generation was opting out, not through dramatic rejection but through quiet, persistent non-participation. The herbivore men had not retreated from sex because they were afraid of women. Many of them had simply recalculated — weighed the effort against the return — and concluded, with the dispassionate logic of people raised in an extremely demanding society, that it wasn't worth it.

Inside the Sexless Marriage

Sekkusu-shinai shōkōgun (セックスしない症候群) — celibacy syndrome — is the term Japanese media coined for the broader phenomenon, which extends well beyond single young men.

Among married couples, the numbers are striking. As of 2023, 46 per cent of married men and 42 per cent of married women in Japan described themselves as being in sexless marriages — defined as having had no sexual contact in the past month. Some surveys put the figure even higher. The Japan Family Planning Association, which has tracked the phenomenon since the 1990s, has documented a consistent decline that shows no sign of reversing.

The reasons offered by married couples are varied and illuminating. For men, exhaustion is the most commonly cited factor — not desire, not attraction, not relationship difficulty, but the simple, bone-deep fatigue of working the hours that Japanese corporate culture demands. For women, the picture is more complicated. Some cite exhaustion too. Some cite the labour of childcare and household management that continues to fall disproportionately on mothers regardless of whether they also work. And some — 22.6 per cent in one survey — describe sex with their husbands as simply mendokusai (めんどくさい): too much hassle.

When more than one in five married women in a country finds sex with their spouse more trouble than it's worth, something has gone wrong in the architecture of those relationships — and it probably has very little to do with sex.

Too Tired, Too Scared, Too Much Hassle

The multiple threads running through Japan's sexlessness all seem to lead back to the same few places.

The first is exhaustion. Japan's work culture — the long hours, the mandatory socialising, the karoshi (過労死) risk that sits at the extreme end of a very wide spectrum of overwork — leaves people arriving home depleted in ways that go beyond physical tiredness. The kind of presence that intimacy requires — attention, vulnerability, the willingness to be emotionally available to another person — is precisely what a fourteen-hour workday most effectively destroys.

The second is pressure. Japan has constructed, around relationships and sex, a set of expectations that make the whole enterprise feel less like pleasure and more like performance. First relationships, then marriage, then children, then the correct execution of family life according to a fairly rigid social script. For a generation already performing exhaustingly at work, the prospect of taking on another demanding performance in their personal lives is, for many of them, simply not appealing.

The third — and perhaps most interesting — is amae (甘え) inversion. The traditional Japanese concept of dependency and indulgence, which once expressed itself through the pursuit of romantic relationships, has found new outlets. Virtual companionship. AI girlfriends and boyfriends. Character relationships in games and anime. Services — increasingly sophisticated, increasingly normalised — that provide the emotional components of intimacy without its demands. For a population that finds real relationships exhausting and risky, a relationship that cannot reject you, cannot be disappointed in you, and requires nothing of you at 11pm on a Wednesday night after a twelve-hour day is not a pathetic substitute. It is a rational solution to a specific problem.

What the Government Tried

Japan's government has been aware of the problem for years, and has responded with the combination of genuine concern and mild absurdity that governments bring to problems they don't fully understand.

There have been subsidised matchmaking services. Regional governments have set up dating agencies. The national government has appointed a Minister of Loneliness. Tokyo's metropolitan government launched a AI-powered matchmaking app. There are campaigns encouraging men to take paternity leave, campaigns promoting work-life balance, financial incentives for having children that economists have consistently found too small to change anyone's behaviour.

None of it has worked, because none of it addresses what is actually happening. The people who are not having sex, not forming relationships, not having children — they are not failing to do these things because they lack information or opportunity. They are making a calculation, and the calculation keeps coming out the same way.

What's Actually Going On

Here is the uncomfortable conclusion that the data keeps pointing toward: Japan has built a society so demanding, so exhausting, and so laden with obligation that a significant portion of its population has quietly decided that the extra demands of intimacy — the vulnerability, the effort, the risk of rejection and disappointment — are a cost they cannot currently afford.

This is not a failure of desire. It is a failure of bandwidth.

The young Japanese person who prefers a virtual companion to a real relationship is not broken. The married couple who stopped being physically intimate years ago is not loveless. The herbivore man who finds relationships more trouble than they are worth has done the maths and arrived at a conclusion that, given his circumstances, is not irrational.

What Japan is living through is not a sex crisis. It is an intimacy crisis — a slow, systemic withdrawal from the most demanding forms of human connection by people who have simply run out of the resources those connections require.