Most women are walking around with hormones that are quietly working against them. Period pain that has been normalised. Fatigue that has been accepted. Stubborn weight that keeps getting blamed on willpower. None of these things are inevitable, and none of them are your fault.
Balancing hormones naturally begins with recognising that what many women write off as "just how it is" (painful periods, mood shifts before menstruation, persistent energy crashes, difficulty losing weight) are actually signals worth investigating. The body is always communicating. The key is learning to listen.
As a personal trainer, I have sat across from countless women doing everything right by conventional standards and still not feeling or performing the way they should. The conversation I had with naturopath and hormone specialist Nat Kringoudis, known as the hormone revolutionist and author of three books on Women's Health, confirmed something I had long suspected: for most women, hormones are the missing piece. In this guide, drawing on Kringoudis's clinical insights, I break down what is actually happening, what your body is trying to tell you, and the practical changes that make a real difference.
One of the most useful reframes in women's health comes directly from Kringoudis: your period is your monthly report card.
Your menstrual cycle is not just a reproductive function. It is a vital sign, in the same way that blood pressure, resting heart rate, and sleep quality are vital signs. A regular, pain-free cycle with manageable flow signals that your hormones are broadly in balance. A painful, irregular, absent, or excessively heavy cycle is your body communicating that something needs attention.
This framing matters because it shifts the response from resignation to curiosity. A check engine light does not mean your car is ruined. It means something specific needs looking at. Your cycle works the same way.
Period pain is common. But common and normal are not the same thing, and the distinction is enormously important.
"No pain is ever normal," says Kringoudis. "It is a sign of something else. If you had pain anywhere else in your body, you would go and explore that, and period pain is no different."
For generations, women have been told that period pain is simply part of being a woman. Something to manage, not investigate. That framing has done an enormous amount of harm, because the answers do exist. Painful periods are among the most treatable presentations in women's health. In the majority of cases, they can be significantly reduced or eliminated through lifestyle and nutrition changes once the root cause is identified.
The most common underlying contributors are chronic stress, food intolerances, inflammation, environmental toxin exposure, and nutritional deficiencies. In some cases, conditions such as endometriosis or PCOS are involved. But the starting point for every woman experiencing pain is the same: stop accepting it as inevitable and start asking why.
Hormone imbalance rarely has a single cause. Kringoudis describes it using the concept of switches. When enough switches are flicked on simultaneously, the body reaches a threshold and symptoms appear. The goal is not to find one perfect answer but to identify which switches are active and start turning them off, one at a time.
The most common contributors include the following.
Chronic stress. This is the single most significant driver and the most consistently underestimated. Stress is not just feeling busy or overworked. It includes emotional strain, unresolved trauma, poor sleep, under-eating, overtraining, and the low-grade pressure of living at a pace that never fully switches off.
Nutrition. What you eat has a direct impact on how hormones are produced, transported, and cleared from the body. Food intolerances are a particularly common and frequently overlooked trigger. Kringoudis saw a patient in clinic whose severe period pain resolved almost entirely once she identified an intolerance to oats and almonds. Every morning she had been having porridge with almond milk, unknowingly fuelling the inflammation driving her symptoms.
Toxin exposure. Endocrine disruptors (chemicals that mimic or interfere with hormones) are present in conventional cleaning products, personal care products, plastics, and unfiltered water. Their effects are cumulative, and most women have no idea how significant their daily exposure is.
Sleep deprivation. Chronic poor sleep elevates cortisol, impairs hormone production, and disrupts the body's natural repair processes. Kringoudis describes sleep as one of the most underestimated levers in hormone health, and one of the first things most people are willing to sacrifice.
Environmental chaos. A cluttered or chaotic home or work environment activates the nervous system in ways that are physiologically similar to psychological stress, keeping the body in a sustained low-grade alert state that draws resources away from reproductive hormone production.
Stress sits at the top of almost every hormone conversation for a precise biological reason: your stress hormones and your reproductive hormones are competing for the same raw materials.
When cortisol is chronically elevated (from work pressure, poor sleep, relationship strain, over-exercise, or simply never switching off), your body deprioritises reproductive hormone production. From an evolutionary standpoint, this is logical. A stressed body reads its environment as unsafe for reproduction. The practical result is lower progesterone, disrupted oestrogen, irregular cycles, and a wide range of symptoms most women never connect to their stress levels.
The deeper problem is that we have become very good at being unconsciously stressed. "We just autopilot," says Kringoudis. "We wake up and we are on all day, and we think that is a measure of success. But your body is keeping score."
One of the clearest demonstrations of the stress-hormone link is what Kringoudis calls the holiday effect: women who struggle with painful or irregular periods often report that their cycle is fine on holiday. The environment changes, the cortisol drops, and the body responds. This tells us something important: the capacity for better hormone health is already there. The question is how to recreate those conditions in everyday life.
Practically, this means building deliberate recovery into your routine: winding down properly before bed, giving yourself permission to do less in the days before your period, and resisting the cultural narrative that pushing harder is always the right answer. As Kringoudis puts it, the goal is to work smarter, not harder, and to do the least amount possible to be the most productive. That is not a compromise. That is a strategy.
Women's bodies operate on a monthly hormonal cycle. Most training programmes, work schedules, and daily routines, however, are built around a 24-hour model, one that is far closer to how the male hormonal system functions than the female one.
The result is that most women train and live as though their bodies are identical every day of the month. They are not.
The menstrual cycle has four phases, and what your body is capable of (physically and mentally) shifts across each of them. During the follicular phase (from menstruation to ovulation), oestrogen rises and most women experience increasing energy, stronger recovery, and a higher capacity for intense training. During the luteal phase (from ovulation to the next period), progesterone rises, energy generally reduces, and the body benefits from more recovery and lower training intensity.
"We go about our lives as if we are men because we live in that world," says Kringoudis. "But we need to lean into our bodies as females and stop pushing against our biology."
Tracking your cycle is the foundational first step. Once you know where you are in your month, you can begin aligning your training load, your creative output, and your recovery accordingly. Kringoudis notes that even understanding this one thing (where you are and what your body needs at that point) can be enough to shift a woman's entire relationship with her health, her productivity, and her sense of self.
And if you have ever felt like you are falling off the bandwagon the week before your period: you are not. You are responding appropriately to a genuine physiological shift. The framing Kringoudis offers is worth sitting with: what if falling off the bandwagon was actually just your monthly reset?
The conversation around birth control and hormone health is nuanced, and it is one Kringoudis believes is not happening nearly enough, particularly for teenagers and women in their twenties.
The oral contraceptive pill is one of the most commonly prescribed treatments for period pain, irregular cycles, and other hormonal symptoms. While it may be appropriate for some women in some circumstances, prescribing it without investigating the root cause of those symptoms is, in Kringoudis's view, a significant missed opportunity.
Two things are worth understanding clearly.
First, the pill prevents ovulation. Without ovulation, there is no true period. The monthly bleed that occurs while on the pill is a withdrawal bleed (the result of coming off synthetic hormones for a week), not a real menstrual cycle. The pill does not fix whatever is causing hormonal symptoms. It suppresses the signal. When it stops, the original problem is still there, and in some cases has worsened over time.
Second, the pill has broader effects on the body than most women are told. Research by Dr Sarah Hill, a research scientist and author of "Your Brain on Birth Control", documents in detail how the pill alters decision-making, mood, and attraction patterns because hormones directly influence how the brain functions. Additionally, when taken during the teenage years, before sex hormone maturity is complete at around age 21, it may interrupt normal hormonal development. Kringoudis notes that research does suggest the more delayed the introduction of hormonal contraception, the less disruptive the long-term effects tend to be.
None of this is an argument against birth control in every situation. It is an argument for having a fuller conversation before starting it, and for asking what is actually driving the symptoms that led to the prescription in the first place.
Nutrition is one of the most accessible levers available for hormone health. Two principles from Kringoudis deserve particular attention.
The approach popularised by biochemist Jessie Inchauspé (eating fibre before the main component of a meal) is one of the most evidence-supported and practically simple interventions available for blood sugar regulation. A handful of berries, raw vegetables, an apple, or a small salad eaten before the rest of a meal significantly blunts the glucose spike that follows.
Why does this matter for hormones? Because blood sugar spikes trigger inflammation, and inflammation is one of the primary drivers of hormone imbalance. Stable blood sugar creates a lower-inflammation environment, which means better conditions for hormone production, transport, and clearance across the board.
Kringoudis has applied this principle in clinic for several years and describes the results as consistently compelling. Patients return reporting better sleep, better periods, improved digestion, and more stable energy. Women with PCOS or insulin resistance tend to see some of the most significant benefits, because oestrogen dominance and insulin resistance are closely linked.
The 3pm energy crash (that near-irresistible urge to reach for something sweet in the afternoon) is one of the clearest signs that blood sugar is not being managed well during the day. Adding fibre before meals can resolve this for most people within a matter of days.
Apps like INCHECK FIT are built on the principle that food choices should be simple, sustainable, and genuinely personalised, and structured nutritional habits like fibre-first eating are exactly the kind of evidence-based approach their meal planning is designed to support.
Hormones are synthesised from fat and protein. This is not complicated, but it is something most women have never been explicitly told. Without adequate protein in the diet, the body does not have the raw materials it needs to produce the hormones it requires.
Getting protein right (at every meal, in amounts appropriate to your body weight, activity level, and goals) is one of the most direct nutritional changes most women can make for their hormone health. It is also the change that tends to get overlooked in favour of more complex interventions.
Kringoudis estimates that around 90 per cent of her female patients present with some degree of oestrogen dominance: a state in which oestrogen is elevated relative to other hormones, particularly progesterone.
The most common signs are heavy or painful periods, pain at ovulation (typically around day 14 of the cycle), mood changes in the week before menstruation, difficulty losing weight around the hips and thighs, and breast tenderness. If several of these sound familiar, that is not a coincidence.
The reason so many women are oestrogen dominant traces back to the environment. Alcohol mimics oestrogen in the body. Many plastics (particularly when heated) release oestrogen-like compounds. Conventional personal care and cleaning products contain endocrine disruptors that behave like oestrogen once absorbed. Soy consumed in large quantities can have a similar effect. These sources of environmental oestrogen stack up across the course of a day, every day, without most women realising it.
The body has a natural clearance pathway for excess oestrogen, and it runs through the gut. Fibre binds to oestrogen in the digestive tract and assists the body in eliminating it before it gets reabsorbed. This is why increasing fibre intake is often so effective for women with heavy periods or significant premenstrual mood symptoms: it is not just about blood sugar stabilisation. It is also about clearing the hormonal excess that is driving the symptoms.
Additional steps that reduce the oestrogen load include filtering drinking water (synthetic oestrogens from medications, including the pill, are not fully removed by standard water treatment), moderating alcohol intake, and gradually switching to cleaner personal care and household cleaning products.
The thyroid is the master regulator of the body. Every single cell requires thyroid hormone to function properly, which is why thyroid dysfunction, even at subclinical levels, can produce an unusually wide and varied range of symptoms: fatigue, weight gain or loss, constipation, dry skin and hair, insomnia, heavy periods, headaches, poor concentration, and more.
The challenge is that most standard thyroid testing is incomplete. A GP will typically order a TSH (thyroid stimulating hormone) test. But TSH does not measure what the thyroid is actually producing; it measures how hard the pituitary gland is working to prompt a thyroid response. To understand what the thyroid itself is doing, you need T3 and T4 levels tested as well.
There is also a reference range issue worth knowing about. TSH reference ranges vary by pathology laboratory. Many labs still use pre-2003 ranges of 0.5-5.0, while current functional medicine practice considers 0.5-3.0 to be the optimal range. A TSH reading of 3.5 might come back marked as "normal" on a standard report, but at a functional level, that person will feel the effects. Kringoudis notes that the closer to 1.0 you can bring your TSH, the better most patients feel.
Stress is the most common driver of thyroid dysfunction that does not involve autoimmune disease. The thyroid is sensitive to cortisol. For many women, addressing stress levels, reducing inflammation, and ensuring adequate nutrition for thyroid function produces measurable improvement without medication.
If your standard thyroid test has come back normal but you are experiencing a cluster of the symptoms described above, it is worth requesting a full panel (TSH, free T3, free T4, and antibody testing) and finding a practitioner who can interpret those results in a functional context rather than simply confirming you are within the reference range.
The concept of endocrine disruptors sounds alarming. The practical response, however, does not require overhauling your entire household overnight.
Kringoudis recommends a straightforward approach she uses with her own patients: as each product in your home runs out, replace it with a cleaner alternative. This makes the transition gradual, manageable, and affordable rather than overwhelming.
Cleaning products are among the most significant sources of hormone-disrupting chemicals in the average home. Kringoudis is direct about this: cleaning your shower with conventional bleach-based products means those chemicals are being absorbed through your skin and entering your bloodstream. Low-toxicity alternatives are now widely available and generally comparable in performance.
Personal care products (shampoo, conditioner, body lotion, deodorant) are applied directly to the skin, which absorbs a meaningful proportion of what is put on it. Checking products against an ingredient-rating app before purchasing is a useful habit. Kringoudis recommends searching for a "clean rating" style app that scores products on ingredient safety, noting that brand names and ingredient lists change frequently enough that an app tends to stay more current than manual research.
Plastics deserve particular attention. Avoid heating food in plastic containers and consider switching from plastic to glass water bottles where possible. Canned tuna (despite being a solid protein source) is another notable source of plastic-derived oestrogen exposure because of the lining of the can. Choosing tuna in glass jars or preparing fresh alternatives where practical reduces this load.
Filtered water is one of the simplest high-impact changes available. Standard water treatment does not remove synthetic hormones, pharmaceutical residues, or many industrial chemicals. A bench-top jug filter is an affordable starting point. For women who are actively working on hormone balance, oestrogen dominance, or fertility, filtered water is a change worth prioritising.
You do not have to change everything at once. Start with one. Then add another. Progress compounds.
Is period pain normal?
Period pain is common, but it is not normal. Pain is always a signal that something is worth investigating. The most common contributors are inflammation, food intolerances, stress, and conditions such as endometriosis or PCOS. In the vast majority of cases, period pain can be significantly reduced or eliminated once the underlying cause is identified and addressed.
What are the most common signs of hormone imbalance in women?
The most frequently seen signs include painful or heavy periods, ovulation pain, persistent fatigue, difficulty losing weight (particularly around the hips and thighs), mood changes in the week before menstruation, skin and hair changes, irregular cycles, and poor sleep. Because every cell in the body requires thyroid hormone to function, thyroid-related imbalances can produce an especially wide and varied range of symptoms.
Does stress really affect your menstrual cycle?
Yes, significantly. When cortisol is chronically elevated, it competes with reproductive hormones for the body's resources. The practical result can be irregular or painful cycles, reduced progesterone, and symptoms of oestrogen dominance. The holiday effect (where women find their periods improve on holiday as stress naturally reduces) is one of the most consistent clinical observations in women's hormone health.
Can nutrition actually change your hormone balance?
Yes. Hormones are synthesised from fat and protein, so dietary intake of both directly affects the body's hormone production capacity. Beyond that, blood sugar stability (supported by adequate fibre intake), gut health, and reducing food intolerances all have measurable effects on inflammation and hormone clearance. Eating fibre before meals to blunt blood sugar spikes is one of the most evidence-supported and practically accessible interventions available.
What should I know before starting or stopping the pill?
The most important thing to understand is that the pill prevents ovulation. The monthly bleed on the pill is a withdrawal bleed, not a true period. If you are taking it to manage symptoms such as period pain or irregular cycles, those symptoms are likely to return when you stop, because the underlying cause has not been addressed. Before starting, it is worth asking what is driving those symptoms and whether other approaches have been explored. Before stopping, getting a baseline hormone panel gives you data to work with.
How do I know if I have oestrogen dominance?
The two most consistent signs are heavy menstrual bleeding and ovulation pain (pain mid-cycle, typically around day 14). Additional signs include significant PMS, mood changes in the week before your period, difficulty losing weight around the hips, and breast tenderness. A hormone test taken on cycle day 21 (or seven days after ovulation) can confirm whether progesterone is appropriately elevated relative to oestrogen at that point in the cycle.
How long does it take to balance hormones naturally?
This varies depending on the individual and the changes being made. Dietary interventions such as increasing fibre and protein can produce noticeable changes within one to two menstrual cycles. Lifestyle changes (consistent sleep, stress reduction, reducing toxin exposure) typically take two to three months to show meaningful effect on cycle health. Sustained effort over three to six months generally produces the clearest, most lasting results. The body responds when you give it what it needs; it just takes time to rebuild what has been depleted.
Hormone health is not a niche concern reserved for women who are planning a pregnancy. It is foundational to how you feel, how your body performs, how you manage your weight, and how well you recover from the demands of everyday life.
The encouraging truth, as Nat Kringoudis makes clear, is that most hormone imbalance is both understandable and addressable. Your body is not broken. It is communicating. The work is learning to read those signals and responding with the lifestyle, nutrition, and environmental changes that give your hormones the conditions they need to function properly.
Start with one thing. Do it consistently. Then ask what the next step is.
Last reviewed: March 2026 by the INCHECK FIT nutrition team.
