Hormonal imbalance:
how to spot the signs

Sleep gets lighter, PMS gets louder, patience gets shorter. Each of these is easy to explain away on its own: too much work, too little rest, getting older. Together they form a pattern, and most women eventually find a name for it. Hormonal imbalance describes how that feels rather well. What is actually happening in the body, it does not describe at all. That is what this article is for.

Hormonal imbalance rarely shows up as one clear symptom. It shows up as a shift: things that worked for years start working less well. Sleep, mood, recovery after training, the weight that settles around the middle. Because each change looks unremarkable on its own, it usually takes years before anyone looks at them together.

From what I see in practice, around 8 in 10 women experience hormonal or stress-related symptoms before the classic menopausal years, mostly without ever being given a framework for them. The symptoms are real. The context is missing.

What hormonal imbalance means, and what it does not

You will not find hormonal imbalance in any diagnostic manual. There is no threshold at which it begins and no test that confirms it. The term comes from the wellness and supplement world rather than from endocrinology. That does not make it useless, but it helps to know what you are holding.

It works as an umbrella for three very different situations. First, a normal transition in which hormones swing more than they used to, as in perimenopause. Second, an actual endocrine condition such as an underactive thyroid or PCOS, which needs treating. Third, a body under sustained load, where stress physiology and the menstrual cycle interfere with each other.

All three feel similar from the inside. They are handled completely differently. So the useful question is not whether you have an imbalance, but which of the three describes you. The groundwork on how oestrogen and progesterone work together across the cycle is covered in a separate article.

The symptoms, sorted by system

Lists of thirty symptoms help very little, because almost every woman recognises herself in them. The more useful question is which areas change at the same time. Hormones act across the whole body, so the complaints rarely arrive alone.

• Cycle and bleeding The gap between periods changes, bleeding gets heavier or lighter, spotting appears, PMS stretches across more days. This is the most reliable signal, because you can actually observe it.
• Sleep and energy Falling asleep still works, staying asleep does not. Waking between two and four in the morning is typical, often wide awake with a busy mind. During the day a tiredness remains that sleep does not resolve.
• Mood and nervous system Irritability, inner restlessness, a shorter fuse for noise and appointments. Many women describe feeling emotionally thinner-skinned than before, particularly in the days before bleeding.
• Body, skin and hair Weight gain around the middle without a change in eating, drier skin, thinning hair, joints that feel stiff in the morning. Recovery after training also takes longer than it used to.

A single item from this list proves nothing. Poor sleep can come down to room temperature, irritability to a hard week. It becomes meaningful when several areas change in the same period and stay changed. That is the difference between a bad stretch and a shift.

Photo: cottonbro studio / Pexels

Four causes behind the symptoms

Four explanations cover most cases. They do not rule each other out. Quite often two of them apply at once.

Perimenopause

The most likely explanation in women between 38 and 50. The ovaries do not wind down evenly during this phase, they work in bursts. A cycle with very high oestrogen is followed by one without ovulation and therefore with almost no progesterone. That irregularity is the actual state of things. Which symptoms are typical is covered in my overview of the commonly overlooked symptoms of perimenopause.

The thyroid

The great impersonator. Fatigue, weight gain, dry skin, hair loss and low mood belong to both pictures. According to the NHS, Hashimoto's disease is most common in women and usually starts between the ages of 30 and 50, which is exactly the window in which perimenopause is also suspected. The advantage: this question can be answered cleanly in a lab. Which values are needed and how to read them is in my guide to thyroid levels in women.

PCOS

Polycystic ovary syndrome affects an estimated 10 to 13 percent of women of reproductive age, and up to 70 percent of them are undiagnosed, according to the World Health Organization. Typical signs are long or absent cycles, increased facial or body hair, acne and difficulty losing weight. PCOS does not disappear with age, it only changes its face.

Sustained stress and too little energy

The most commonly missed item on the list. Prolonged load, eating too little or training a great deal act directly on the control centre in the brain. The Endocrine Society guideline on functional hypothalamic amenorrhoea describes the route: psychological stress activates the stress axis, which in turn suppresses the pulse generator for the sex hormones. The hormones are not broken here. They are being turned down, because the body has judged conditions to be unfavourable.

Three patterns hiding behind the word imbalance

When women talk about their hormones being off, they usually mean one of three patterns. They differ in which symptoms dominate and where in the cycle those symptoms appear.

Too little progesterone relative to oestrogen

The most common pattern from the mid-thirties onwards. Progesterone is only produced after ovulation. If ovulation does not happen, the second half of the cycle runs without its calming effect while oestrogen stays normal or high. Stronger PMS, breast tenderness, disturbed sleep in the days before bleeding and a shorter fuse are typical. This is often called oestrogen dominance, although the issue is not too much oestrogen but too little counterweight.

Falling oestrogen

This pattern arrives later, in the second half of perimenopause. Hot flushes, night sweats, dry skin and mucous membranes, joint pain and difficulty concentrating move to the foreground. The symptoms depend less on the day of the cycle, because by then the cycle has become irregular anyway.

Too much androgen

Male hormones such as testosterone have their jobs in the female body too. When they sit too high for too long, it shows as acne around the chin and jawline, more body hair, greasier hair and long cycles. This is the only one of the three patterns that is clearly measurable, and it is the main reason an assessment for PCOS is worth doing.

The patterns overlap. A woman can experience one in a given cycle and another in the next, because the ovaries no longer work evenly during perimenopause. That is precisely what makes self-diagnosis via symptom lists so unreliable.

Why a hormone test says less than you hope

The obvious move when hormones are suspected: measure everything once. Test kits start at around 60 euros online. The problem is not the idea, it is the biology.

Oestrogen and progesterone change several-fold within a single cycle, so a value without a cycle day cannot be interpreted. In perimenopause the readings also swing from month to month. This is why STRAW+10, the international staging system for this phase of life, rests primarily on bleeding patterns rather than on single hormone values. A normal result rules out little here, and an abnormal one proves little.

Saliva tests for sex hormones, widely sold online, are weaker still: they lack standardised reference ranges, and the major professional societies advise against using them to guide treatment.

Other things measure well. Thyroid values, ferritin, blood glucose and inflammatory markers stay stable enough across the cycle to be meaningful. Which values are actually worth having is set out in my overview of blood tests for women over 40.

Photo: Letícia Alvares / Pexels

When the symptoms need medical assessment

A lot of hormonal fluctuation is normal and needs time and support rather than investigation. Some signs, though, belong in a consulting room, because treatable causes can sit behind them.

• Periods stop altogether without pregnancy, particularly before the age of 40
• Very heavy or very long bleeding, or bleeding less than three weeks apart
• Any bleeding that occurs after twelve months without a period
• Sudden hair loss, increased facial hair or a deepening voice
• Exhaustion that clearly limits daily life, or persistently low mood
• Milky discharge from the breast outside pregnancy and breastfeeding

What helps in that conversation is a record covering three to four months: first day of bleeding, symptoms, sleep. That is exactly the information missing in most appointments, and it turns a vague feeling into a change you can describe.

The FemBalance view: the pattern beats the single value

Katharina, 37, describes something I hear often: “I went to the doctor because I felt permanently exhausted. But my blood results were unremarkable. So at some point I thought maybe it was just me.” Something had in fact changed: her sleep, her resilience, the way her body felt. Just nothing a standard panel shows.

That gap between result and experience is where many women give up. I see it as the actual starting point. An unremarkable panel means the conditions that were tested for are unlikely. It does not mean everything is fine, because sleep quality, stress load, muscle mass and cycle pattern appear on no lab report.

What helps in that situation is unglamorous and well evidenced. Strength training two to three times a week improves insulin sensitivity, sleep and bone density. Enough protein holds the muscle mass that starts declining from the mid-thirties without a stimulus. Regular sleep times and morning daylight steady the cortisol rhythm, which in many women slips out of sync during exactly this phase. Why waking at night is so often the first signal is covered in my article on waking up at night and hormones.

None of this replaces a diagnosis where a diagnosis is needed. But it changes the conditions the hormones are working under, and in most cases that is the larger lever. How to put it into practice without rebuilding your whole life is what I have gathered in my digital guides.

Last updated: 5 October 2026

Frequently asked questions

This article is for general information and does not replace medical diagnosis or treatment. The symptoms described can have many causes, including ones not listed here. If periods stop or become very heavy, if bleeding occurs after twelve months without one, with sudden hair loss, or with symptoms that clearly limit daily life, please speak to a doctor.