Why Sexual Health Deserves a Seat at the Wellbeing Table
In conversations about wellbeing, we have become comfortable naming sleep, nutrition, exercise, and mental health as pillars worth protecting and prioritising. Sexual health rarely makes that list. It is often quietly dismissed as private, indulgent, or secondary to the “real” work of staying healthy - something to think about later, if at all. Yet a growing body of research tells a very different story: sexual health is closely and consistently linked to our mental, emotional, physical, and relational well-being, and neglecting it carries a measurable cost.
A Quiet, Long-Term Decline
Large-scale survey data shows a clear, multi-decade decline in sexual frequency among adults. Analysis of the U.S. General Social Survey found that in 1990, around 55% of adults aged 18–64 reported having sex at least weekly. By 2024, that figure had fallen to roughly 37%. The decline holds even among married couples, whose rate of weekly sexual activity fell from 59% to 49% over a similar period. Researchers describe this as a structural social shift - a genuine “sex recession” - rather than a temporary blip, driven by falling rates of cohabitation and partnering, increased screen time displacing in-person connection, and shrinking shared social time.
It is easy to treat this as a private or inconsequential trend. The research suggests otherwise.
Why It Matters for Relationships
A 2025 study published in the Journal of Family Psychology (Johnson, Li, Impett, Lavner, Neyer, & Muise) analysed 2,101 long-term couples and asked a direct question: are relationship satisfaction and sexual frequency really linked? Using a statistical technique called latent profile analysis, the researchers identified distinct patterns across the sample. The results were striking:
86% of couples fell into a single profile characterised by both high relationship satisfaction and sex close to once per week - alongside high commitment, open communication, and low conflict.
Couples with low satisfaction and infrequent sex made up only 3.6% of the sample.
“Happy sexless” couples do exist - but they were rare, representing just 2.3% of the sample.
The study does not prove that sex causes relationship satisfaction - correlation is not causation, and every relationship is different. But it offers strong evidence that, for the overwhelming majority of long-term couples, sexual connection and relationship satisfaction move together. Neglecting one rarely leaves the other untouched.
Why It Matters for Mental and Emotional Health
The link extends well beyond the relationship itself. A 2024 systematic review published in the Bulletin of the World Health Organization screened close to 24,000 studies down to 63 that met rigorous inclusion criteria, and found consistent associations between positive sexual health and lower depression and anxiety, alongside higher life satisfaction - across men, women, older adults, and both same-sex and mixed-sex couples.
A separate 2025 cross-sectional study of nearly 16,000 U.S. adults found that a sexual frequency of roughly one to two times per week was associated with the lowest likelihood of depression on standard screening measures. Related research from the COVID-19 lockdown period found that sexual inactivity during that time was linked to higher rates of anxiety and depression - a reminder that intimacy is not a luxury that sits apart from mental health, but something interwoven with it.
Why It Matters for Physical Health
The physical evidence is equally compelling. A 2025 review in Sexual and Relationship Therapy synthesised research - including neuroscience - on how sexual activity affects the body, finding associations with improved cardiovascular health, immune function, and physical fitness, alongside reduced blood pressure. These effects are linked to neurochemicals such as oxytocin and dopamine, released before, during, and after intimacy, which support bonding and stress regulation as much as pleasure.
One of the largest syntheses of this evidence, a 2025 meta-analysis in Behavioral Sciences pooling 228 studies and nearly 248,000 participants, confirmed robust links between sexual satisfaction and physical, psychological, and interpersonal wellbeing - underscoring that this is not a fringe finding, but a well-replicated pattern across a very large evidence base.
The Important Nuance
None of this means more sex automatically produces a better relationship, or that sexual activity is required for every couple’s happiness. Sexlessness by mutual choice, and satisfaction without regular sex, are both real and valid experiences for a small minority of couples. What the evidence does show is that, across large populations and long time spans, sexual connection and relationship satisfaction consistently move together - and that sexual health sits alongside sleep, nutrition, and exercise as a genuine, evidence-backed pillar of wellbeing, not an optional extra.
A Clinical Perspective
In practice, declining intimacy is rarely just about sex. It is far more often a symptom of broader relational drift - accumulated stress, fatigue, poor communication, or emotional distance. Working on connection, communication, and shared stress load frequently restores desire naturally, without sex itself ever becoming the direct focus of the work. Sexual frequency is best understood not as a behaviour to chase upward in isolation, but as a barometer - a signal of how a relationship, and the people in it, are really doing.
Sexual health is not indulgent, and it is not secondary. The research is clear that it is closely tied to how well we function mentally, emotionally, physically, and relationally. It deserves to be treated - openly and without stigma - as part of the wellbeing conversation.
References
Institute for Family Studies (2025). The Sex Recession: The Share of Americans Having Regular Sex Keeps Dropping. Analysis of General Social Survey (GSS) data, 1990–2024. ifstudies.org
Johnson, M. D., Li, W., Impett, E. A., Lavner, J. A., Neyer, F. J., & Muise, A. (2025). How are sexual frequency and relationship satisfaction intertwined? A latent profile analysis of male-female couples. Journal of Family Psychology. https://doi.org/10.1037/fam0001331
Vasconcelos, P., Carrito, M. L., Quinta-Gomes, A. L., Patrão, A. L., Nóbrega, C. A. P., Costa, P. A., & Nobre, P. J. (2024). Associations between sexual health and well-being: a systematic review. Bulletin of the World Health Organization. https://doi.org/10.2471/BLT.24.291565
Optimal sexual frequency may exist and help mitigate depression odds in young and middle-aged U.S. citizens: A cross-sectional study (2025). Journal of Affective Disorders (ScienceDirect), published online January 2025.
Sex for health? How sexual activity improves physical and mental health and beyond (2025). Sexual and Relationship Therapy, 41(1), 3–45. https://doi.org/10.1080/14681994.2025.2491050
Pollard, A. E., Cero, I., & Rogge, R. D. (2025). Conceptual frameworks linking sexual health to physical, mental, and interpersonal well-being: A comprehensive systematic review and meta-analysis. Behavioral Sciences, 15(12), 1636. https://doi.org/10.3390/bs15121636