Medical Review

Written by: Serene Naturopathic Doctors

Medically Reviewed by: Dr. Yasmin Amini, ND

Last Updated: October 2026

Services Related to This Article

• Naturopathic Perimenopause Care

• Hormonal Health

• Naturopathic Medicine

• Weight Management

• Nutrition & Lifestyle Support

• Bioidentical Hormone Replacement Therapy (BHRT)

Quick Read Summary

Perimenopause can begin years before the final menstrual period, and the experience can look very different from one woman to another.

Changes may include:

• Irregular or changing menstrual cycles

• Hot flashes or night sweats

• Sleep disturbance

• Mood changes

• Brain fog

• Weight changes

• Headaches

• Vaginal or urinary symptoms

At Serene Naturopathic Doctors & Doulas, our approach is to understand these symptoms in the context of the patient’s age, menstrual history, medical history, nutrition, stress, sleep, relevant laboratory findings, and individual risk factors.

Lifestyle, nutritional, supplemental, and medical options can then be discussed according to the individual’s needs.

For some patients, that conversation may include whether bioidentical hormone replacement therapy (BHRT) or another form of menopausal hormone therapy is appropriate.

Hormone therapy isn’t automatically right for every patient. The decision requires an individualized assessment of symptoms, medical history, contraindications, preferences, and potential benefits and risks, with appropriate prescribing and follow-up care.

Could My Symptoms Be Perimenopause?

Sometimes the first sign isn’t a hot flash.

It may be:

“My periods aren’t as predictable anymore.”

Or:

“Why am I waking up every night?”

Or:

“I don’t understand why my mood has changed.”

Or:

“I’m doing the same things, but managing my weight feels different.”

Or simply:

“Something has changed, but I’m not sure what.”

Perimenopause is the transition leading up to menopause, and symptoms can begin before menstruation stops completely.

At Serene Clinic, we look at the broader pattern rather than expecting every woman to experience the transition in exactly the same way.

Perimenopause Can Look Different for Every Woman

There isn’t one standard perimenopause experience.

One woman may primarily notice menstrual changes.

Another may be most affected by sleep.

Someone else may experience hot flashes.

Another may notice mood or cognitive changes.

And some women experience several symptoms at the same time.

Possible changes during the perimenopausal transition can include:

• Changes in menstrual frequency or flow

• Hot flashes

• Night sweats

• Difficulty sleeping

• Mood changes

• Brain fog or difficulty concentrating

• Headaches

• Weight or body-composition changes

• Vaginal dryness or discomfort

• Changes in sexual health

• Urinary symptoms

The combination, severity, and impact of symptoms vary significantly between individuals.

What Happens During Perimenopause?

During the reproductive years, ovarian hormones generally follow a relatively predictable menstrual pattern.

As the transition toward menopause begins, ovarian function changes.

Hormone levels can fluctuate, and ovulation may become less predictable.

This can contribute to changes in menstrual cycles and symptoms such as hot flashes, night sweats, and sleep disturbance.

But perimenopause isn’t simply a state of “low hormones.”

Hormonal patterns can fluctuate considerably during the transition.

That’s one reason symptoms and menstrual history are often particularly important when evaluating perimenopause.

When Does Perimenopause Start?

There is no single age when every woman enters perimenopause.

The transition commonly begins in the 40s, although timing varies.

For many women, symptoms begin while they are still having periods.

That can be confusing.

Some patients assume:

“I still get my period, so this can’t be perimenopause.”

But menopause and perimenopause are not the same thing.

Perimenopause refers to the transition leading toward menopause.

Menopause is reached after 12 consecutive months without a menstrual period when there is no other physiological or pathological explanation.

So symptoms can begin well before the final menstrual period.

Your Menstrual Cycle Can Provide Important Information

Changes in menstruation are among the most useful patterns to discuss during a perimenopause assessment.

Questions may include:

• Are your cycles becoming shorter?

• Are they becoming longer?

• Have you started skipping periods?

• Has the amount of bleeding changed?

• Are periods becoming more or less frequent?

• Have symptoms around menstruation changed?

These patterns can help provide context.

However, menstrual changes shouldn’t automatically be attributed to perimenopause.

Other medical conditions can also affect bleeding and menstrual cycles, which is why appropriate assessment remains important.

Why Sleep Can Change During Perimenopause

Sleep disturbance can become one of the most disruptive symptoms of the transition.

Some women:

• Have difficulty falling asleep

• Wake repeatedly

• Wake because of night sweats

• Wake very early

• Feel tired despite spending enough time in bed

Sometimes vasomotor symptoms such as night sweats contribute directly.

In other cases, sleep changes may involve multiple factors.

An individualized assessment may therefore consider:

• Hot flashes and night sweats

• Sleep routine

• Stress

• Caffeine

• Alcohol

• Physical activity

• Medications

• Other health conditions

Improving sleep can become a major quality-of-life goal rather than treating it as a minor side effect of getting older.

Mood Changes During Perimenopause

Some women report changes in:

• Mood

• Irritability

• Anxiety

• Emotional resilience

• Motivation

Hormonal transitions may be part of the picture, but mood symptoms should not automatically be attributed to hormones.

Stress, sleep, life circumstances, medications, existing mental-health conditions, and other medical factors may also contribute.

Significant or persistent mental-health symptoms deserve appropriate assessment and care.

The goal isn’t to explain every emotional change as:

“It’s just your hormones.”

It is to understand the whole clinical picture.

What About Brain Fog?

Difficulty concentrating, forgetfulness, and a subjective sense of “brain fog” are frequently reported during the menopausal transition.

For some women, these changes can be unsettling.

But cognition can also be influenced by:

• Poor sleep

• Stress

• Mood

• Medications

• Other health conditions

Again, the pattern matters.

New, significant, or progressive cognitive symptoms should not automatically be assumed to be caused by perimenopause.

Why Does Weight Management Feel Different?

Weight and body composition can change through midlife.

But it is overly simplistic to say:

“Perimenopause causes weight gain.”

Weight is influenced by multiple factors, including:

• Age

• Muscle mass

• Physical activity

• Nutrition

• Sleep

• Stress

• Medications

• Medical conditions

• Menopausal changes

For women who find that managing their weight has become more difficult, an individualized weight management assessment can look beyond the scale and consider nutrition, activity, metabolic health, sleep, and other relevant factors.

Vaginal and Urinary Symptoms Matter Too

Some women experience vaginal or urinary changes during the menopausal transition.

These may include:

• Vaginal dryness

• Burning or irritation

• Discomfort during intercourse

• Changes in sexual comfort

• Urinary urgency or frequency

• Recurrent urinary symptoms

These concerns are sometimes underreported because patients may feel uncomfortable discussing them.

But they can have a meaningful impact on quality of life and deserve appropriate assessment.

There are both non-hormonal and hormonal treatment options depending on the individual situation.

Do You Need Hormone Testing to Diagnose Perimenopause?

Not necessarily.

This is an important point because patients are often told that they need a large hormone panel to determine whether they are in perimenopause.

Hormone levels can fluctuate substantially during the transition.

For many women in the typical age range with characteristic symptoms and menstrual changes, clinical history may provide more useful information than a single hormone measurement.

However, laboratory testing may still be appropriate when there is a specific clinical question.

Testing might be used to:

• Investigate another possible explanation for symptoms

• Assess relevant metabolic concerns

• Evaluate other medical conditions

• Clarify an atypical presentation

At Serene Clinic, testing is considered when it can meaningfully contribute to the assessment—not simply because someone has reached a certain age.

Other Conditions Can Sometimes Look Like Perimenopause

Symptoms such as fatigue, sleep disturbance, mood changes, menstrual changes, and weight changes aren’t unique to perimenopause.

Depending on the individual presentation, an assessment may need to consider other possibilities.

These may include:

• Thyroid disorders

• Iron deficiency or anemia

• Sleep disorders

• Mental-health conditions

• Medication effects

• Other hormonal or gynecological conditions

This is another reason an individualized assessment matters.

The goal isn’t simply to label every symptom occurring in the 40s as perimenopause.

What Can Perimenopause Care Include?

Perimenopause care can involve several different approaches depending on symptoms and individual preferences.

These may include:

Lifestyle Support

This can involve:

• Physical activity

• Resistance exercise

• Sleep strategies

• Stress management

• Alcohol and caffeine review

• Other sustainable lifestyle changes

Nutritional Support

An individualized nutrition plan may consider:

• Overall dietary pattern

• Protein

• Fibre

• Meal composition

• Cardiovascular health

• Bone health

• Metabolic health

• Individual nutritional needs

Supplements

Evidence-informed supplementation may be considered when appropriate.

But supplements should not automatically be recommended simply because a woman is in perimenopause.

Potential benefits, evidence, medications, interactions, medical history, and individual needs should be considered.

Medical Treatment

For women whose symptoms significantly affect quality of life, medical treatment may also be appropriate.

For some patients, this includes a conversation about menopausal hormone therapy.

What Is Bioidentical Hormone Replacement Therapy (BHRT)?

The term bioidentical hormone replacement therapy (BHRT) is commonly used to describe hormone therapy using hormones that are chemically identical to hormones produced by the human body.

An important distinction is that “bioidentical” does not automatically mean:

Natural.

Safer.

Risk-free.

Better for every patient.

There are regulated prescription hormone products containing bioidentical hormones, and there are also compounded hormone preparations.

These should not automatically be treated as equivalent.

The specific product, route, dose, medical history, evidence, and individual risk factors matter.

Is BHRT Right for Every Woman in Perimenopause?

No.

The decision to use hormone therapy is individualized.

Relevant considerations can include:

• Which symptoms are most disruptive

• Age

• Stage of the menopausal transition

• Personal medical history

• Family history

• Cardiovascular risk

• Breast-health history

• History of blood clots

• Unexplained vaginal bleeding

• Other medications

• Patient preferences

• Potential benefits and risks

For some women, hormone therapy may be an appropriate treatment option.

For others, a different approach may be more appropriate.

The question shouldn’t be:

“Is BHRT good or bad?”

A better question is:

“Is hormone therapy appropriate for this particular patient?”

Hormone Therapy Should Include Appropriate Follow-Up

Starting hormone therapy isn’t the end of the conversation.

Appropriate follow-up matters.

Depending on the individual and treatment, follow-up may consider:

• Symptom response

• Side effects

• Bleeding patterns

• Dose

• Route of administration

• Changes in medical history

• Ongoing benefits and risks

• Whether treatment still aligns with the patient’s goals

This was particularly important in one of Dr. Yasmin Amini’s recent patients.

A Patient With Cycle Changes, Poor Sleep, Mood Changes and Weight Concerns

One patient came to Dr. Amini concerned about several changes happening at the same time.

Her menstrual cycles were changing.

Her sleep had become disrupted.

She was experiencing mood changes.

And managing her weight had become more difficult despite feeling that she hadn’t significantly changed her lifestyle.

Instead of looking at each symptom separately, Dr. Amini reviewed the overall pattern.

They considered:

• Her age

• Menstrual history

• Symptoms

• Laboratory results

• Nutrition

• Stress

• Sleep

The discussion then moved beyond simply asking whether she was “in perimenopause.”

They also discussed which symptoms were affecting her quality of life most and what treatment options might be appropriate.

Where BHRT Entered the Conversation

For this patient, bioidentical hormone replacement therapy became part of the discussion.

But it wasn’t presented as an automatic treatment simply because she had symptoms consistent with perimenopause.

Dr. Amini considered whether BHRT could be appropriate in the context of:

• Her symptoms

• Her individual risk factors

• Her medical assessment

• Her treatment goals

The plan also ensured that appropriate medical assessment and follow-up were part of her care, particularly if BHRT was used.

This distinction is important.

Hormone therapy is a medical treatment—not simply another wellness supplement.

Perimenopause Care Doesn’t Have to Be “Natural vs. Medical”

Women are sometimes presented with two supposed choices:

Lifestyle and natural support

or

Hormone therapy.

But these approaches don’t necessarily need to compete.

A patient using hormone therapy may still benefit from:

• Appropriate nutrition

• Exercise

• Resistance training

• Sleep support

• Stress management

• Cardiovascular risk reduction

• Bone-health strategies

Likewise, someone focusing initially on lifestyle strategies may later decide with their prescribing provider that hormone therapy should be considered.

At Serene Clinic, hormonal health care focuses on understanding the individual patient’s symptoms and helping determine which combination of approaches may be appropriate.

What Does a Perimenopause Assessment Look At?

An individualized assessment may include:

Area	What We May Review
Menstrual history	Cycle frequency, duration, flow and changes
Vasomotor symptoms	Hot flashes and night sweats
Sleep	Falling asleep, waking and sleep disruption
Mood	Anxiety, irritability and mood changes
Cognitive symptoms	Brain fog and concentration changes
Weight & metabolism	Changes in weight, activity and metabolic health
Vaginal health	Dryness, discomfort and sexual-health symptoms
Urinary symptoms	Frequency, urgency and other changes
Nutrition	Overall dietary pattern and nutritional needs
Lifestyle	Exercise, resistance training, alcohol and caffeine
Medical history	Conditions relevant to symptoms and treatment decisions
Medications	Existing medications and potential considerations
Laboratory findings	Relevant testing when clinically indicated
Hormone therapy	Benefits, risks, preferences and appropriateness

The purpose isn’t to treat every woman in the same way.

It is to determine which concerns matter most to the individual.

Experience From Dr. Yasmin Amini, ND: Perimenopause

Perimenopause can look very different from one woman to another. Changes in menstrual cycles, hot flashes, sleep disturbance, mood changes, brain fog, weight changes, headaches, and vaginal symptoms can begin years before the final menstrual period. At Serene, we help women understand these changes and discuss evidence-informed lifestyle, nutritional, supplemental, and medical options—including when a conversation about hormone therapy with their prescribing provider may be appropriate.

For example, I worked with a patient who came in concerned about changes in her cycles, disrupted sleep, mood changes, and difficulty managing her weight despite feeling that she had not significantly changed her lifestyle. We reviewed her symptoms in the context of her age, menstrual history, laboratory results, nutrition, stress, and sleep. We discussed if biodentical ormone replacement therapy (BHRT) was an option for her in terms of her symptoms and risk factors. Her plan focused on the areas that were most disruptive to her quality of life while also ensuring that appropriate medical assessment and follow-up were part of her care, especially with the use of BHRT.

— Dr. Yasmin Amini, ND

Patient examples have been modified and de-identified to protect privacy and are provided for educational purposes. Individual experiences and treatment plans vary.

Why Patients Choose Serene Clinic for Perimenopause Support

At Serene Naturopathic Doctors & Doulas, perimenopause isn’t treated as one universal set of symptoms.

One patient may be most concerned about hot flashes.

Another may be struggling primarily with sleep.

Someone else may be experiencing mood changes.

Another woman may be concerned about weight, vaginal symptoms, or changes in her menstrual cycle.

Our naturopathic doctors consider the broader health picture and help patients understand available options.

Care may include:

• Nutrition

• Lifestyle support

• Sleep strategies

• Exercise

• Evidence-informed supplementation when appropriate

• Assessment of other relevant health concerns

• Discussion of medical treatment options

• Coordination with prescribing and medical providers when appropriate

For some patients, hormone therapy may be part of that discussion.

For others, it may not be appropriate or desired.

The goal is informed, individualized care—not automatically putting every woman on the same treatment plan.

When Should You Seek Medical Assessment for Perimenopause Symptoms?

Even when symptoms appear consistent with perimenopause, some changes deserve additional medical attention.

These may include:

• Very heavy bleeding

• Bleeding between periods

• Bleeding after sex

• Bleeding after menopause

• New or severe headaches

• Significant or worsening mood symptoms

• New breast changes

• Severe pelvic pain

• Symptoms that are unusual or rapidly worsening

Symptoms should not automatically be dismissed because someone is in their 40s or 50s.

Appropriate medical investigation remains an important part of perimenopause care.

Conclusion

Perimenopause can begin years before the final menstrual period and can look very different from one woman to another.

Changes in:

Periods.

Sleep.

Mood.

Hot flashes.

Brain fog.

Weight.

Headaches.

Vaginal or urinary health.

…may all become part of the transition.

For one patient working with Dr. Yasmin Amini, changes in menstrual cycles occurred alongside disrupted sleep, mood changes, and difficulty managing weight.

Rather than focusing on one symptom, Dr. Amini reviewed her age, menstrual history, laboratory findings, nutrition, stress, sleep, and overall health picture.

They also discussed whether BHRT could be an appropriate option based on her symptoms and risk factors.

Her plan prioritized the symptoms having the greatest impact on her quality of life while ensuring that appropriate medical assessment and follow-up remained part of her care—particularly in relation to hormone therapy.

The key question in perimenopause care isn’t:

“What treatment does every woman need?”

It’s:

“Which symptoms are affecting this woman most, and which options are appropriate for her?”

Frequently Asked Questions About Perimenopause and BHRT

1. What are the first signs of perimenopause?

Menstrual-cycle changes are common, but some women first notice sleep disturbance, hot flashes, night sweats, mood changes, headaches, brain fog, or other changes. The pattern varies significantly between individuals.

2. Can I be in perimenopause if I still have regular periods?

Yes. Perimenopause begins before the final menstrual period, and symptoms may occur while someone is still menstruating. However, symptoms should be assessed in context because they may have other explanations.

3. How long can perimenopause last?

The duration varies between individuals. The transition can continue for several years before menopause is reached.

4. Do I need a hormone test to know if I’m in perimenopause?

Not necessarily. Hormone levels can fluctuate during perimenopause, so symptoms, age, and menstrual history are often important. Testing may be appropriate when it answers a specific clinical question or helps investigate another possible cause.

5. Can perimenopause affect sleep?

Yes. Sleep disturbance is commonly reported during the menopausal transition. Hot flashes and night sweats may contribute, but stress, lifestyle, medications, and other health conditions can also affect sleep.

6. Can perimenopause affect mood?

Some women experience changes in mood, irritability, or anxiety during the transition. Significant mental-health symptoms should still receive appropriate assessment rather than automatically being attributed to hormones.

7. Does perimenopause cause weight gain?

Midlife weight and body-composition changes can be influenced by multiple factors, including age, activity, muscle mass, sleep, nutrition, medications, health conditions, and menopausal changes. It is usually more complex than hormones alone.

8. What is BHRT?

BHRT generally refers to hormone therapy using hormones that are chemically identical to hormones produced by the human body. “Bioidentical” does not automatically mean safer, more effective, or risk-free, and regulated prescription products should be distinguished from compounded preparations.

9. Is BHRT safe for everyone?

No. Hormone therapy requires individualized assessment. Medical history, symptoms, age, risk factors, contraindications, medication use, and personal preferences all matter when determining whether it may be appropriate.

10. Can a naturopathic doctor help with perimenopause?

A naturopathic doctor can provide complementary support around nutrition, lifestyle, sleep, stress, exercise, and evidence-informed supplementation and can help patients discuss available medical options with appropriate prescribing providers. Medical treatment and hormone therapy require appropriate assessment, prescribing, and follow-up.

References

1. The Menopause Society. Evidence-based clinical information regarding perimenopause, menopause symptoms, and menopausal hormone therapy.

2. Society of Obstetricians and Gynaecologists of Canada (SOGC). Canadian guidance on menopause, symptom assessment, and treatment options.

3. Health Canada. Canadian information regarding authorized hormone products, medications, and health-product safety.

4. Ontario Health. Health information and care pathways relevant to women’s health and appropriate medical assessment.

5. The Menopause Society. Clinical information distinguishing regulated bioidentical hormone therapy from compounded bioidentical hormone preparations.

Looking for Perimenopause Support in Toronto?

If changes in your periods, sleep, mood, hot flashes, brain fog, weight, or vaginal health are beginning to affect your quality of life, understanding whether they may be related to perimenopause can be an important first step.

At Serene Naturopathic Doctors & Doulas, we provide individualized perimenopause support that considers nutrition, lifestyle, sleep, stress, symptoms, medical history, relevant testing, and available treatment options.

When appropriate, that can also include discussing whether hormone therapy should be considered with an appropriate prescribing provider.

Book a free consultation to learn more about perimenopause support in Toronto or virtually across Ontario.

This article is for educational purposes only and does not replace medical diagnosis or treatment. Hormone therapy requires individualized assessment of potential benefits, risks, contraindications, and appropriate follow-up. Individual treatment plans and outcomes vary.