Your body is changing. Pinky keeps up.

Perimenopause is the hormonal transition leading to menopause, and it can begin years earlier than most women expect — sometimes in the late 30s. If you're experiencing new anxiety, sleep disruption, cycle changes, or rage you can't explain, fluctuating hormones are a likely cause.

Perimenopause brain fog — difficulty concentrating, forgetting words, losing your train of thought — is caused by fluctuating estrogen levels that directly affect brain regions governing memory and attention. The good news: research shows these cognitive changes are temporary and not linked to dementia.

The sudden, explosive anger many women experience in perimenopause is not a personality flaw — it's driven by dropping progesterone (which acts on your brain's calming GABA system) and fluctuating estrogen affecting serotonin and dopamine. Effective treatments include hormone therapy, SSRIs, CBT, and regular exercise.

The 2002 WHI study that scared millions of women off hormone therapy used synthetic hormones in women over 60 — not the modern bioidentical hormones prescribed to perimenopausal women today. Current evidence shows that for women under 60, the benefits of HRT (reduced hot flashes, bone protection, improved mood and sleep) significantly outweigh the small risks.