Perimenopause Specialist in Chorleywood, Hertfordshire
Supporting women through perimenopause with personalised nutrition, functional testing, and evidence-informed lifestyle guidance
Perimenopause is one of the most significant hormonal transitions a woman will experience, yet it is one of the least well supported by conventional medicine. Many of my clients arrive having spent years managing symptoms including disturbed sleep, weight gain, low mood, hot flushes, brain fog, anxiety, erratic periods. It is common to be told by your GP that your bloods are normal and that this is simply what getting older feels like.
It is not, and it does not have to be your experience.
I am Angela Loftus BSc, PGDip, DipION, CFMP — a fully qualified Nutritional Therapist and Certified Functional Medicine Practitioner registered with BANT and CNHC, based in Chorleywood, Hertfordshire. I have spent over ten years working with women at every stage of hormonal change, with perimenopause being one of my primary areas of specialism. I work with clients in person in Hertfordshire and online throughout the UK.
What is perimenopause, and why does it affect us so much?
Perimenopause is the transition phase leading up to menopause, typically beginning in a woman’s early to mid-forties, though for some women it can start in their late thirties. It ends when a woman has gone 12 consecutive months without a period, at which point she is considered to have reached menopause. The perimenopause itself can last anywhere from two to twelve years, and for many women the symptomatic period is at its most intense during this phase rather than after it.
What drives perimenopause symptoms is a pattern of hormonal fluctuation rather than straightforward decline. Progesterone tends to fall first, often from the mid-thirties onwards as ovulation becomes less consistent and luteal phase progesterone output drops. Oestrogen, rather than declining steadily, fluctuates dramatically; rising higher than normal before dropping lower, sometimes within the same cycle. This unpredictability is what makes perimenopause so disorienting and why symptoms can feel so inconsistent from week to week.
These hormonal shifts do not happen in isolation. They affect your sleep, your metabolism, your blood sugar regulation, your gut microbiome, your thyroid function, your bone density, and your cardiovascular risk profile. Perimenopause is a whole-body transition, and it responds best to a whole-body approach.
Perimenopause symptoms I commonly work with
The women who come to me are often dealing with a combination of the following, frequently without having connected them all to perimenopause:
- Disrupted sleep: difficulty falling asleep, waking between 2 and 4am, or waking unrefreshed despite adequate hours
- Hot flushes and night sweats
- Weight gain: particularly around the abdomen, despite no change in diet or exercise
- Brain fog: poor concentration and memory lapses
- Low mood: heightened anxiety, or a sense of overwhelm that feels disproportionate
- Irritability and emotional reactivity that feels out of character
- Fatigue that is not relieved by rest
- Changes in menstrual cycle: shorter cycles, heavier or lighter periods, missed periods, or spotting
- Reduced libido
- Joint aches and stiffness
- Hair thinning
- Digestive changes: including bloating and changes in bowel habits
- Palpitations
- Headaches or migraines: particularly in the week before a period
If you are experiencing several of these and are in your late thirties, forties or early fifties, perimenopause may well be the underlying thread connecting them, even if you still have regular periods.
Supporting oestrogen metabolism and clearance
The liver plays a central role in processing oestrogen, while the gut helps eliminate it from the body through the bowel. When this process is impaired, through poor diet, dysbiosis, or compromised liver function, spent oestrogen can be reactivated and recirculated, worsening oestrogen dominance symptoms such as heavy periods, bloating and breast tenderness. I focus on supporting both pathways through diet, including cruciferous vegetables, fibre, and probiotic and prebiotic foods.
Blood sugar regulation
Oestrogen has a stabilising effect on insulin sensitivity especially in key organs like muscle, the pancreas and the liver and when oestrogen drops at perimenopause, blood sugar regulation becomes more challenging and less stable. This in turn drives a classic weight gain pattern of fat accumulation around the abdomen as well as contributing to energy crashes, mood instability and poor sleep. Stabilising blood sugar is one of the most impactful early interventions I make with perimenopausal clients.
Bone and cardiovascular health
Oestrogen is protective of both bone density and cardiovascular health. Its fluctuation during perimenopause marks the beginning of an elevated risk period for both, which is why this stage of life, not after menopause, is the time to make dietary changes as well as changing your weekly exercise routine to include weight bearing and plyometric exercises like skipping, hopping or investing in a rebounder.
My approach to perimenopause nutrition
No two women experience perimenopause in exactly the same way, and my approach reflects that. I do not offer a generic perimenopause protocol. I work to understand your specific hormonal pattern, your current nutritional status, your lifestyle, your health history. I take into account other factors such as thyroid function, gut health, stress load, and sleep quality, which can influence how you experience this transition.
My starting point is always a thorough assessment of your current diet and lifestyle, your symptom history, and any recent blood results. From there, I develop a personalised nutrition programme that works with the hormonal changes of perimenopause rather than trying to suppress them.
The core nutritional principles I work with during perimenopause include:
Protein and muscle preservation
Declining oestrogen accelerates the loss of muscle mass, which in turn slows metabolism and increases cardiovascular risk. Adequate protein intake – typically higher than most women are currently eating – is central to preserving muscle, supporting energy levels, and maintaining metabolic health through this transition.
Gut health and the oestrobolome
The gut microbiome plays an important role in oestrogen regulation through a group of bacteria known as the oestrobolome. These bacteria produce enzymes that influence how oestrogen is metabolised and recirculated in the body, helping to regulate oestrogen levels. Dysbiosis – an imbalance in the gut microbiome – can disrupt this process, potentially affecting oestrogen levels and hormone balanceI frequently find that supporting and improving gut health can have a meaningful impact on hormone balance during perimenopause, which is why it is an important area I explore with my clients.
“I first approached Angela having suffered for years with unmanageable heavy periods, PMS, gut problems and various other hormone-related issues. After having tests done and seeing the hormone imbalance results on paper, Angela could help me to help myself. Every check-in with Angela guided me to a better quality of health. After six months under her advice I’m really starting to see and feel the benefits.”
I was suffering with classic perimenopausal symptoms: hot flushes, mood swings and menopausal acne. The guidance and advice I have received has been invaluable. I can honestly say that within just a few days the change was remarkable – renewed energy, stable moods and clearer skin. After a month the symptoms had all but disappeared and I had also lost half a stone!
Functional testing during perimenopause
For some clients, a more detailed picture of hormonal status provides invaluable information that allows me to tailor my recommendations more precisely. The test I most commonly recommend for perimenopausal clients is the DUTCH Complete hormone test.
The DUTCH test measures not just oestrogen and progesterone levels but how oestrogen is being metabolised – which oestrogen metabolites are being produced, and which detoxification pathways are being used. It also measures cortisol rhythm throughout the day, DHEA, melatonin, and a range of organic acids that give insight into B vitamin status, oxidative stress, neurotransmitter metabolism and mitochondrial function. For a perimenopausal woman experiencing a complex symptom picture, this level of detail can be transformative in guiding a targeted programme.
I also recommend the DUTCH test in three specific situations that arise regularly in my practice:
- Before starting HRT, where establishing a baseline hormonal profile can help inform decisions about the type and dose of HRT most likely to be appropriate.
- When already taking HRT but still symptomatic, where the test can identify whether hormones are being absorbed and metabolised effectively and whether the current prescription is addressing the underlying pattern.
- When the symptom picture is unclear, where testing can clarify which hormones are primarily driving symptoms when this is not apparent from the clinical picture alone.
You can read more about the DUTCH test and what it measures on my functional lab testing page.
Perimenopause and thyroid function
Thyroid conditions are significantly more common in women than men, and they frequently emerge or worsen during perimenopause. The relationship is bidirectional: fluctuating oestrogen affects thyroid hormone binding and conversion, while undiagnosed or undertreated thyroid conditions can amplify perimenopausal symptoms considerably. This particularly applies to fatigue, weight gain, brain fog and low mood.
Many of my perimenopausal clients have thyroid conditions, either diagnosed or suspected, and I work with the interaction between thyroid and reproductive hormones as part of a holistic assessment. If thyroid function has not been comprehensively tested (beyond TSH alone) I will often recommend a full thyroid panel as part of the initial workup. You can read more about my approach to thyroid health in my article on boosting thyroid function naturally.
About Angela Loftus
Angela Loftus BSc, PGDip, DipION, CFMP is a fully qualified Nutritional Therapist and Certified Functional Medicine Practitioner registered with BANT (British Association for Nutrition and Lifestyle Medicine) and CNHC (Complementary and Natural Healthcare Council). She is based in Chorleywood, Hertfordshire and works with clients both in person and online across the UK.
Angela has spent ten years working with over 1,000 clients, with a specialism in female hormone health across every life stage from PMS and PCOS in younger women, through to perimenopause and menopause using personalised nutrition, targeted supplementation and functional hormone testing.
To discuss your specific goals and learn more about how I can help, why not book in for a FREE no obligations phone call using the form below:
Frequently asked questions
Where are you based and do you offer online consultations?
I am based in Chorleywood, Hertfordshire and see clients in person in the local area including Rickmansworth, Chorleywood, Amersham, Chesham, Watford and surrounding villages. I also work with clients online throughout the UK via video consultation. The approach and quality of support is identical whether we meet in person or online.
How do I know if what I am experiencing is perimenopause?
Perimenopause can begin in the late thirties and does not require irregular or absent periods to be present. If you are experiencing symptoms such as disrupted sleep, mood changes, unexplained weight gain, fatigue, or changes to your periods – particularly if these feel new or out of character – perimenopause may be a factor worth exploring. A detailed symptom history and, where appropriate, functional hormone testing can help clarify this. I offer a free 15-minute discovery call for new clients where we can discuss your symptoms and whether my approach is likely to help.
Do I need to have irregular periods to be in perimenopause?
No. In the early stages of perimenopause many women still have entirely regular cycles. The hormonal changes, particularly the fall in progesterone, can predate any changes to the menstrual cycle by several years. Symptoms such as premenstrual mood changes, breast tenderness, worsening PMS, disrupted sleep in the second half of the cycle, and unexplained anxiety can all be early perimenopause markers in women who are still cycling regularly.
Do you work with women who are already taking HRT?
Yes. Many of my clients are taking HRT when they come to me and are either still symptomatic or looking to optimise their nutrition and lifestyle alongside their prescription. Nutritional therapy and functional medicine complement HRT and address aspects of perimenopausal health including gut function, blood sugar regulation, thyroid health, bone density, nutrient status, that HRT alone does not cover. I always work alongside a client’s GP and would never advise stopping or altering prescribed medication.
Do you work with women in early perimenopause who want to be proactive?
Absolutely, and in many ways this is the ideal time to start. The nutritional foundations that support hormone metabolism, gut health, blood sugar stability and bone density are most powerful when put in place early, before symptoms become established. I work with women who want to manage the transition proactively, not just those who are already in difficulty.