Understanding perimenopause

Perimenopause is not a disease — it's a transition. Estrogen and progesterone don't simply decline; they oscillate wildly, sometimes spiking higher than at any point since puberty. It's the volatility, not the decline, that causes most symptoms. Understanding this reframes everything: the goal is not to "fix" something broken but to stabilise an inherently unstable system while protecting long-term health.

What's happening: The ovaries become less predictable. Some cycles produce surges of estrogen followed by crashes. Progesterone drops earlier because ovulation becomes inconsistent. This hormonal volatility affects the brain (mood, sleep, cognition), the cardiovascular system (palpitations, blood pressure), the musculoskeletal system (joint pain, muscle loss), and metabolism (weight redistribution, insulin sensitivity changes). The average duration is 4–10 years before periods stop entirely.
Common symptoms: Sleep disruption — often the first and most disruptive symptom. Waking at 2–4am is hallmark.

Irregular periods — shorter, longer, heavier, lighter, or skipped entirely

Hot flashes and night sweats — sudden heat surges, often clustered

Mood changes — anxiety more common than depression initially; irritability, tearfulness

Brain fog — word-finding difficulty, short-term memory lapses

Joint pain and stiffness — often mistaken for early arthritis

Decreased libido and vaginal dryness

Heart palpitations — benign but alarming

Weight redistribution — particularly to the midsection
Could it be something else?: Yes. Thyroid dysfunction (hypo or hyper) mimics nearly every perimenopause symptom. Iron deficiency causes fatigue, brain fog, and mood changes. Vitamin D deficiency overlaps with joint pain, mood, and sleep issues. Chronic stress and cortisol dysregulation produce identical symptoms. This is why bloodwork is non-negotiable before assuming everything is hormonal.

Perimenopause Protocol