Perimenopause hormone fluctuations alter caffeine tolerance, which can suddenly cause nervousness, anxiety, or sleep disturbances.

noli's read

The link between caffeine and increased sensitivity during this life transition is well-documented by research. A large observational study from the Mayo Clinic (published in the journal *Menopause*), for example, associated caffeine consumption with more intense hot flashes. Furthermore, a clinical trial published in the journal *Maturitas* demonstrated that perimenopausal women exhibit increased physiological reactivity (heart rate and blood pressure) after caffeine ingestion compared to premenopausal women. Biologically, caffeine and estrogen share the same metabolic pathway in the liver (the CYP1A2 enzyme), which intimately links the metabolism of your favorite beverage to your hormonal variations. Nevertheless, the idea of a systematic negative effect is exaggerated: tolerance remains highly individual and depends primarily on your own genetics. Finally, perimenopause naturally weakens sleep and stress management, simply making the nervous system more vulnerable to stimulants indirectly.

the sources

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