Primary research

This long-term study followed 233 women from before menopause to after their final period to see how different types of anxiety relate to hot flushes. Anxiety was split into two parts: somatic anxiety (physical tension symptoms such as heart racing, sweating, trembling, bodily restlessness) and affective anxiety (worry, nervousness, fear).

• Over 14 years, 72% of women reported moderate or severe hot flushes.
• Somatic anxiety was a powerful predictor of hot flushes. After accounting for menopausal stage, women with higher somatic anxiety had about three times the risk of hot flushes (OR ≈ 3.0), and those in the highest third for somatic anxiety had the greatest risk.
• When both anxiety types were analysed together, affective anxiety added very little. High worry without high bodily tension did not significantly increase the chance of hot flushes compared with low‑anxiety women.
• In full multivariable models (adjusting for hormones and other factors), somatic anxiety remained strongly associated with hot flushes (OR ≈ 3.1), while affective anxiety was no longer significant.
• Higher somatic anxiety scores at one visit predicted hot flushes at the next (time‑lagged analysis), with about a 71% increase in risk, whereas earlier affective anxiety did not predict later hot flushes.

Source: Menopause

This paper supports my thesis that hot flushes are closely linked to a high‑arousal, high‑tension nervous system state rather than simply to “low oestrogen.” This pattern is consistent with my model in which menopausal symptoms arise from how the whole stress–energy system is behaving, not from estradiol levels alone, and where a chronically activated stress system makes any underlying metabolic transition harder to manage.

• Hot flushes in this cohort were not just “oestrogen deficiency symptoms”; they tracked much more closely with a body that is already in a high‑tension, high‑arousal state (somatic anxiety).
• The fact that somatic anxiety precedes and predicts future hot flushes suggests a shared underlying mechanism—likely involving stress circuitry, autonomic tone, and thermoregulatory control—rather than hot flushes simply causing women to feel anxious.