In short
Hormone imbalance is a symptom, not a diagnosis. When women with irregular cycles are properly investigated, the answer is usually one of five named conditions.
- Hypothalamic causes, mostly stress, undereating or heavy training: 35 per cent
- Polycystic ovary syndrome: 30 per cent
- Raised prolactin: 13 per cent
- Early ovarian insufficiency: 10 per cent
- Thyroid disease and other causes: the remainder
The point of testing is to find which one you have, not to collect numbers.
Treatment Overview
What does hormone imbalance usually turn out to be?
In a classic series of 262 women with cycles that had stopped or become irregular, the causes broke down like this.
| Ovary | 40 per cent | Mostly PCOS at 30 per cent, early ovarian insufficiency at 10 per cent |
| Hypothalamus | 35 per cent | Almost all functional, driven by stress, low intake or heavy training |
| Pituitary | 17 per cent | 13 per cent raised prolactin |
| Uterus | 7 per cent | Scarring inside the womb |
| Other | 1 per cent | Thyroid, adrenal and rarer causes |
Every one of those has a different treatment. That is why the panel is designed to separate them rather than to produce a general hormone score.
Which tests are actually worth doing?
A useful panel is short and each test answers a question.
- Pregnancy test. Always first, whatever you think. Bleeding does not rule pregnancy out, since many early pregnancies bleed.
- Prolactin. Measured in every woman with cycle disturbance. Stress, sleep and intercourse all raise it, so a borderline result under 50 ng/mL is repeated before any scan is considered.
- TSH. Menstrual disturbance affects about 35 per cent of women with severe hypothyroidism. An underactive thyroid can also raise prolactin and enlarge the pituitary, which is easily mistaken for a tumour.
- FSH and oestradiol. These separate the two big groups. High FSH points to the ovary running out. Low or normal FSH points to the hypothalamus.
- Testosterone and related androgens. Where there is acne, unwanted hair growth or a PCOS picture.
Does the timing in your cycle matter?
Yes, where you are still cycling. Oestradiol, FSH and progesterone all change across the month, so a result read without knowing the cycle day can be genuinely misleading.
Prolactin and TSH are less time dependent, but prolactin is affected by stress, sleep and recent sex, so how the sample is taken matters more than the day.
What about the conditions that hide behind normal hormones?
Some causes of cycle disturbance are not hormonal at all and are easy to miss.
- Around 40 per cent of women with untreated coeliac disease have menstrual cycle disorders
- Amenorrhoea affects about 20 per cent of adult women with type 1 diabetes even when it is well controlled
- Womb scarring after instrumentation causes very light or absent periods with entirely normal blood results
Why not simply take more hormones?
Because the treatment depends on the cause. Low oestrogen from undereating and heavy training is corrected by fixing the energy balance, not by prescribing over the top of it.
PCOS is treated for its ovulation, androgen and metabolic problems. A prolactinoma is treated with medication that shrinks it. Ovarian insufficiency before 40 needs hormone replacement at a fuller dose than menopausal treatment, because bone loss is the real risk.
Who Is a Good Candidate?
- Your cycle has become irregular, longer than 35 days, or fewer than nine periods a year
- You have gone three months without a period, or six months if your cycles were already irregular
- Acne, unwanted hair growth or hair thinning have appeared alongside cycle changes
- You have been told your hormones are fine but the symptoms have not gone
- You train hard or eat lightly and your periods have become unreliable
- Milky discharge from the breasts, which needs prolactin checked promptly
- Severe headache, visual change or a marked personality change alongside cycle loss
- Periods stopping before 40, which needs assessment rather than reassurance
What Happens During the Consultation
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1
The cycle history
When your cycles changed and how. Length, frequency, heaviness, and what else changed at the same time. This history narrows the list before any blood is taken.
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2
The targeted panel
Pregnancy test, prolactin, TSH, FSH and oestradiol as the core, with androgens added where the picture suggests PCOS. Timed to your cycle where you are still cycling.
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3
Interpretation against a question
Each result is read as an answer to a specific question, not against a general reference range. Borderline prolactin is repeated before anything is escalated.
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4
A named diagnosis and a plan
You leave with a name for what is happening, or a clear next step to get one. Treatment follows the cause rather than the symptom.
Program Structure & Follow-Up
What happens after the results?
The path depends entirely on which of the five groups you fall into. There is no single follow up schedule, and a clinic that offers you one has not narrowed the diagnosis.
If it is hypothalamic
- The target is energy availability, not a prescription. Intake, training load and stress are addressed first
- Bone density matters, because low oestrogen over months costs bone
- Cycles usually return once the underlying pressure comes off
If it is PCOS
- Treatment is aimed at cycle regulation, androgen symptoms and metabolic risk separately
- Insulin resistance and weight are assessed as part of the picture, not as a moral judgement
If prolactin is high
- Repeated first, because stress and sleep alone can raise it
- Persistently high levels lead to pituitary imaging and, usually, medication
If FSH is high before 40
- This is early ovarian insufficiency and it is treated properly, not watched
- Oestrogen replacement is at a higher dose than menopausal treatment, continued to the usual age of menopause, because bone protection is the goal
Benefits, Limits & Safety
What does a proper workup achieve?
It replaces a vague label with a named condition, and each of those names comes with a treatment that has actually been studied.
It also catches the things that matter most: ovarian insufficiency before 40, a pituitary problem, an unrecognised thyroid disorder, and coeliac disease.
What are the limits of hormone testing?
Single results are noisy. Prolactin rises with stress and sleep. Oestradiol and FSH swing across the cycle and swing further in the years before menopause.
A panel also cannot see the uterus. Womb scarring produces absent periods with completely normal bloods, and is found by history and imaging rather than by blood tests.
What is not offered
- Saliva hormone panels, which are not used to guide treatment
- Very broad hormone screens ordered without a question attached, which mostly generate borderline results that need chasing
- Custom compounded hormone mixtures
- Routine testosterone for women, which has no proven benefit for energy, mood, memory or bone
What about testosterone in women?
Endogenous androgen levels do not predict sexual function in women. Testosterone helps sexual desire in carefully selected cases, mostly after both ovaries have been removed, and licensed female doses do not exist in most countries.
Outside that indication it is not recommended, and it is not prescribed as a general optimisation measure.
What you get
A named cause rather than a label, from a short panel where every test answers a specific question.
How results are read
Timed to your cycle where relevant, borderline prolactin repeated before escalation, and interpreted against your history rather than a generic range.
Not offered here
Saliva hormone panels, undirected broad screens, compounded hormone mixtures, and routine testosterone without an indication.
Cost & Program Investment
The consultation and the laboratory panel are quoted separately, and you are told the cost of both before anything is ordered. The panel is deliberately short, because tests without a question attached mostly generate results that need chasing. Any further imaging or specialist referral is discussed and quoted before it is arranged.
Frequently Asked Questions
It is a description of symptoms rather than a diagnosis. When women with irregular cycles are properly investigated, the cause is nearly always one of a short list: hypothalamic, PCOS, raised prolactin, early ovarian insufficiency, thyroid disease or womb scarring.
It depends on the test and on whether you are still cycling. Oestradiol, FSH and progesterone are cycle dependent and will be timed for you. Prolactin and TSH are less so, but prolactin is affected by stress, sleep and recent sex.
Normal bloods narrow the list rather than closing it. Womb scarring, coeliac disease and functional causes can all present with normal or near normal hormones, so the next step is history and, sometimes, imaging.
Yes. Functional hypothalamic causes account for about 35 per cent of cases, and psychological stress, restrictive eating and heavy training are the usual drivers. It is a real physiological state, not a dismissal.
Broad panels without a question attached tend to produce borderline results that then need chasing. A short targeted panel answers more and costs less.
No. It is not used to guide treatment here, because saliva levels do not reliably predict symptoms or the right dose.
It is called primary ovarian insufficiency and it needs proper treatment rather than watching. Oestrogen is replaced at a higher dose than for menopause, up to the usual age of menopause, mainly to protect bone.
Evidence
Where this information comes from
Every figure on this page is taken from the sources below. All of them are free to read, so you can check them yourself.
This page is general medical information and does not replace a personal consultation. Trial results are averages across large groups, not a prediction for any one person.