What exactly are hormones — and why do they matter?

Hormones are chemical messengers produced by glands in your endocrine system. They travel through your bloodstream to tissues and organs, regulating nearly every biological process — from your metabolism and mood to fertility, sleep, and immune function. Even small fluctuations can trigger a cascade of symptoms that affect your quality of life.

Understanding the key players gives you power over your own health. Here are the hormones most commonly involved in imbalance:

Signs your hormones may be out of balance

Hormonal imbalance rarely announces itself with a single dramatic symptom. Instead, it whispers through patterns — fatigue that won’t lift, weight that won’t shift, moods that seem disconnected from your circumstances. The following symptoms are among the most common indicators:

Estrogen dominance — the silent epidemic

Estrogen dominance occurs when estrogen is disproportionately high relative to progesterone. It can happen with both high and normal estrogen levels — what matters is the ratio. Environmental estrogens (xenoestrogens) from plastics, pesticides, and personal care products compound the problem, as does sluggish liver detoxification of used estrogens.

Common symptoms of estrogen dominance

Heavy, painful periods — PMS — breast tenderness — fibroids — endometriosis — weight gain around hips and thighs — low thyroid function — mood swings before menstruation.

Supporting healthy estrogen metabolism

The liver processes estrogen through two detoxification phases. Supporting both phases — along with the gut’s ability to eliminate estrogen metabolites — is central to restoring balance. Indole-3-carbinol (found in cruciferous vegetables), sulforaphane, and specific B vitamins are clinically recognised for this role.

Perimenopause & menopause — navigating the transition naturally

Perimenopause — the years before menstruation stops entirely — can begin as early as the late thirties. Estrogen and progesterone levels fluctuate erratically during this phase before declining permanently. Menopause is confirmed after 12 consecutive months without a period, typically between ages 45 and 55.

The hormone shifts of this transition affect virtually every body system: thermoregulation (hot flushes, night sweats), sleep, cognition, cardiovascular health, bone density, vaginal health, and mood. Natural approaches focus on phytoestrogens, adaptogenic herbs, and targeted nutrients that support the body through change.

The role of phytoestrogens

Phytoestrogens are plant compounds that bind weakly to estrogen receptors, helping to buffer the effects of declining estrogen. Rhapontic rhubarb extract (ERr 731) has been extensively studied in randomised controlled trials for menopause symptom relief.

Cortisol & adrenal fatigue — when stress hijacks your hormones

Cortisol is produced by the adrenal glands in response to stress. In short bursts, it is life-saving. Chronically elevated, it is hormone-disrupting — suppressing thyroid function, depleting progesterone (which the body converts to cortisol in times of stress), impairing insulin sensitivity, and interfering with sleep.

The term “adrenal fatigue” describes the exhaustion of the HPA (hypothalamic-pituitary-adrenal) axis after prolonged stress. This manifests as difficulty waking, energy crashes, reliance on stimulants, and immune vulnerability.

The HPA axis and your hormone cascade

When cortisol is chronically high, your body “steals” pregnenolone — the master precursor hormone — away from sex hormone production towards cortisol synthesis. This is called the “pregnenolone steal” and is a key mechanism behind stress-related hormonal imbalances.

Thyroid health — the hormone no one talks about enough

The thyroid gland produces T3 and T4 hormones that regulate metabolic rate — how quickly your body converts nutrients to energy. Thyroid dysfunction is one of the most under-diagnosed conditions, particularly in women, and frequently mimics depression, anxiety, or simple fatigue.

Selenium, zinc, iodine, and iron are essential cofactors for thyroid hormone production and conversion of T4 to the active T3 form. Chronic stress, gut dysfunction, and estrogen excess all impair thyroid function independently.

Insulin resistance — the hormonal disruptor hiding in plain sight

Insulin is produced by the pancreas in response to rising blood glucose. When cells become resistant to its signal — typically through chronic sugar intake, sedentary lifestyle, and chronic stress — the pancreas produces more and more insulin, creating a state of hyperinsulinaemia. This excess insulin directly disrupts sex hormone balance, stimulating the ovaries to overproduce androgens (a key driver of PCOS) and impairing liver detoxification of estrogen.

Addressing insulin resistance is often the most important first step in restoring hormonal balance — particularly for women with PCOS, unexplained weight gain, or irregular cycles.

The gut–hormone connection: your estrobolome & microbiome

A specialised community of gut bacteria — the estrobolome — is responsible for metabolising estrogen after the liver has processed it. When gut health is compromised (dysbiosis, leaky gut, constipation), an enzyme called beta-glucuronidase reactivates already-cleared estrogens, allowing them to recirculate in the bloodstream. This is a primary driver of estrogen dominance and is often entirely overlooked in conventional hormone management.

Testosterone & male hormonal health

Hormonal imbalance is not exclusively a women’s issue. Men experience gradual testosterone decline from around age 30 (andropause), as well as estrogen elevation — driven by aromatase enzyme activity that converts testosterone to estrogen, exacerbated by excess body fat, alcohol, and xenoestrogen exposure. Low testosterone manifests as fatigue, reduced muscle mass, low libido, erectile dysfunction, depression, and cognitive decline.

Foundational nutrients every hormonal body needs

Beyond targeted support, certain foundational nutrients are so frequently deficient — and so central to hormonal production, signalling, and detoxification — that virtually everyone with hormonal imbalance benefits from addressing them first.

When to use a comprehensive multivitamin

A high-quality multivitamin provides the nutritional foundation upon which targeted hormone protocols are built. Not all multivitamins are equal — those containing phytonutrients, activated B vitamins, and clinically meaningful doses provide substantially more benefit than standard supermarket formulations.