New research shows that higher insulin levels in early perimenopause may predict earlier and longer-lasting hot flashes. Learn how metabolic health affects menopause.
How Insulin Levels in Perimenopause May Shape Menopause Symptoms
Menopause is often discussed in terms of estrogen and other reproductive hormones, but emerging research suggests metabolic health plays an important role as well. A new study published in the Journal of Clinical Endocrinology & Metabolism highlights fasting insulin levels in midlife as a potential predictor of how women experience menopause. Insulin, a hormone involved in blood sugar regulation, often rises years before diabetes or other metabolic conditions develop. The findings suggest these early metabolic changes may influence when menopausal symptoms begin and how long they last. This adds a new layer to how women and clinicians may think about menopause planning and prevention.
The Study: Tracking Insulin and Menopause Over Time
Researchers analyzed data from the long-running Study of Women’s Health Across the Nation (SWAN), which follows a diverse group of women through midlife. They focused on fasting insulin levels measured around age 47 and tracked participants across the menopausal transition. At the start of the study, most women were not yet experiencing hot flashes or night sweats. This allowed researchers to observe when symptoms first appeared and how long they persisted. Reproductive hormones, including estrogen, follicle-stimulating hormone (FSH), and testosterone, were also measured over time.
Higher Insulin Linked to Earlier and Longer Hot Flashes
The results showed that women with higher insulin levels in early perimenopause were more likely to experience hot flashes and night sweats earlier than their peers. These symptoms also tended to last longer throughout the menopausal transition. Notably, this association remained even after accounting for body mass index (BMI). While higher BMI has long been associated with menopausal symptoms, insulin appeared to provide additional insight beyond body weight alone. This suggests metabolic health may affect menopause independently of size or weight.
Insulin, Hormones, and Menopause Biology
The study also found differences in hormone patterns based on insulin levels. Higher insulin was linked to greater increases in testosterone during menopause, while BMI was more closely associated with changes in estrogen and FSH. These findings suggest that metabolic factors influence menopause through multiple biological pathways. This may help explain why women of similar age and body composition can have very different menopause experiences. Menopause, the authors note, is not just a reproductive transition but also a metabolic one.
Why Metabolic Health Matters Before and During Menopause
Together, these findings point to insulin as an early marker that may help predict menopause symptom patterns. Because insulin resistance can develop quietly years before overt disease, it may offer an opportunity for earlier intervention. Supporting metabolic health in midlife—through nutrition, physical activity, sleep, and appropriate medical guidance—could potentially influence how menopause is experienced later. While more research is needed to determine causality, this study strengthens the case for a more comprehensive approach to perimenopause and menopause care. It also underscores the importance of addressing metabolic health well before symptoms peak.
Take the Next Step
If you’re in your 40s or early 50s and beginning to notice changes in your cycle, sleep, or energy levels, this may be the right time to evaluate your metabolic health. Simple lab markers like fasting insulin, glucose, and lipid levels can provide valuable insight into your overall health trajectory. Early awareness allows for proactive steps that may not only support long-term cardiometabolic health but potentially ease the menopausal transition as well.
Reach out to one of TreatRite Wellness healthcare providers about metabolic screening during perimenopause, or one of our team will schedule a comprehensive menopause and metabolic health consultation.
https://calendly.com/treatritewellness/30min
Reference
Athar S, et al. Insulin Levels Early in Perimenopause Inform Vasomotor Symptom Incidence Across the Menopausal Transition.
Journal of Clinical Endocrinology & Metabolism, 2026.
Available at:
https://academic.oup.com/jcem/advance-article/doi/10.1210/clinem/dgaf699/8413273