Joylux Releases Real-World Analysis of 23,000+ Women Finding Menopause Operates as an Interconnected Symptom Network
Joylux, a women's health company, released Perimenopause and Menopause as a Network Condition, a real-world data report analyzing symptoms from 23,248 women that finds menopause is best understood not as a checklist of isolated complaints, but as a structured, interconnected system in which fatigue, cognition, mood, sleep, vasomotor, and genitourinary symptoms are statistically and clinically linked.
The analysis identifies fatigue, brain fog, and libido as central features connecting cognitive, emotional, sexual, and systemic health. The findings have implications for earlier recognition and more integrated menopause care.
The report, authored by Dr. Sarah de la Torre MD, FACOG, DipABLM, Dr. Elizabeth Knight PhD, DNP, and Lexeigh Kolakowski, applies tetrachoric correlation analysis, hierarchical clustering, and Ising network modeling to symptom data collected over a three-year period through the Joylux digital health platform. The findings provide large-scale quantitative support for what menopause clinicians have long observed: that symptoms rarely occur in isolation and may be more accurately understood as expressions of a coordinated neuroendocrine transition.
"Menopause specialists have understood these connections in clinical practice for years.," said Dr. Sarah de la Torre, OB-GYN and Chief Medical Officer at Joylux. "What a dataset of this size allows us to do is quantify them. When fatigue, cognitive symptoms, mood changes, sleep disruption, and libido concerns appear together with this kind of statistical regularity, and when the network structure remains stable across perimenopause and postmenopause, it strengthens the case for evaluating and treating menopause as a connected physiological transition rather than a series of unrelated complaints."
Among the report’s most striking findings:
Fatigue emerged as the most centrally connected symptom in the network, with the highest closeness and betweenness centrality of any symptom measured — nearly double the next highest — linking neurocognitive, vasomotor, somatic, sexual, and genitourinary domains. This positions fatigue as a high-value clinical signal rather than a nonspecific complaint.
Brain fog and focus difficulty showed the strongest pairwise relationship in the dataset (r = 0.86), embedded within a tightly connected cognitive-emotional cluster that includes anxiety, mood, and sleep disruption — reinforcing that cognitive symptoms are core features of the menopause transition.
Libido functioned as a "bridge symptom," strongly anchored within the genitourinary cluster but also connecting outward to fatigue and mood — suggesting libido may serve as an integrative signal of overall physiological and emotional state, not solely a sexual health concern.
The symptom network architecture remained stable across perimenopause and postmenopause, even as the prevalence of individual symptoms shifted. Neurocognitive and vasomotor symptoms were significantly more prevalent in perimenopause — fatigue (45.1% vs. 30.8%), brain fog (43.3% vs. 28.7%), and anxiety (31.7% vs. 18.9%) — indicating the network is already fully active well before many women would traditionally be recognized as menopausal.
“For too long, menopause has been managed one symptom at a time—hot flashes here, brain fog there, vaginal dryness somewhere else,” said Colette Courtion, Founder and CEO of Joylux. “That is not how women experience it, and it is not what our data shows. This report is our way of giving 23,000 women’s experiences the scientific weight they have always deserved. When menopause is understood as a system, it can be recognized earlier, treated more effectively, and experienced with greater clarity.”
The findings extend insights from longitudinal cohort studies including the Study of Women's Health Across the Nation (SWAN), which has established that menopause symptoms often begin years before the final menstrual period and frequently cluster together. The Joylux analysis adds quantitative architecture to that observation: identifying not only which symptoms co-occur, but which occupy central and bridging positions within the broader symptom system.
"There is enormous value in studying women's health at scale, and industry has a role to play in contributing data and analysis to a field that has been historically underfunded and under-researched," said Colette Courtion, founder and CEO of Joylux. "Menopause specialists have been making the case for integrated care for years. Our hope is that this analysis contributes to the conversation they have been leading, and helps move the field toward earlier recognition, more integrated models of care, and the kind of personalization that real-world data can support."
The report arrives amid growing national attention on menopause, a healthcare category that affects more than one billion women globally.
Find out more about Joylux on their website.