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Heavy Periods: Root Causes, Hormonal Imbalances, and What to Do First

Naturopathic support for heavy periods in San Diego, Encinitas, Solana Beach, and Vista


Heavy periods are common, but they are not normal.


If you’re soaking through pads or tampons, passing large clots, feeling drained during your cycle, or planning your life around your period, your body is giving you important information.


As a naturopathic doctor serving women across California and locally throughout San Diego County, including Encinitas, Solana Beach, and Vista, I approach heavy periods as a signal, not something to suppress. The goal is not just to reduce bleeding temporarily, but to understand why it’s happening and correct the underlying imbalance.


If you’ve ever wondered, “Why are my periods so heavy?” this article is a good place to start.


In this article, I’ll talk about:


Pink background with menstrual products, red flower, feather, and clock. Text: "Heavy Periods: Root Causes, Hormonal Imbalances."

What Are Heavy Periods? (Heavy Menstrual Bleeding Explained)


Heavy menstrual bleeding, also known as menorrhagia, refers to menstrual bleeding that is excessive in volume, duration, or impact on daily life.


You may be dealing with heavy periods if you experience:

  • Bleeding lasting longer than 7 days

  • Needing to change a pad or tampon every 1–2 hours

  • Passing clots larger than a quarter

  • Flooding or bleeding through clothing or bedding

  • Fatigue, dizziness, or shortness of breath during your cycle

  • Low iron or anemia on lab work


If your period interferes with your energy, work, exercise, or social life, you deserve to explore the root causes to feel better.


What Causes Heavy Periods?


Heavy periods rarely occur without a physiological reason. In clinical practice, heavy menstrual bleeding is most often driven by hormonal imbalances, inflammatory patterns, nutrient deficiencies, or thyroid dysfunction. These causes are often overlapping, making it more crucial to run the appropriate lab tests.


Below are the most common root causes I see in my patients locally in San Diego, Encinitas, Solana Beach, and Vista.


1. Estrogen Dominance


One of the most common contributors to heavy periods is estrogen dominance.


This may occur when:

  • Estrogen levels are high

  • Progesterone levels are low

  • Estrogen is not being effectively metabolized or eliminated


Estrogen thickens the uterine lining. Without adequate progesterone to stabilize it, the lining can become overly built up and shed heavily.


Clues estrogen dominance may be involved include:

  • Heavy or progressively heavier periods

  • Breast tenderness

  • PMS, irritability, or anxiety

  • Short luteal phase

  • Cycles that worsen over time


2. Low Progesterone


Progesterone regulates uterine tissue, menstrual flow, and cycle stability.


When progesterone is low, periods may become:

  • Heavy

  • Long

  • More frequent

  • More painful


Low progesterone is commonly associated with:

  • Chronic stress

  • Under-eating or low-calorie diets

  • Over-exercising

  • Perimenopause

  • Coming off hormonal birth control


This is one of the most overlooked causes of heavy menstrual bleeding, especially in younger women.


3. Iron Deficiency (Both a Cause and a Consequence)


Heavy periods frequently lead to iron deficiency, but iron deficiency can also worsen bleeding.


Low iron affects:

  • Oxygen delivery to uterine tissue

  • Uterine muscle tone

  • Energy, mood, and cognitive function


This creates a feedback loop: heavy bleeding lowers iron, and low iron contributes to heavier bleeding and deeper fatigue.


This is why simply “taking iron” without identifying the root cause often leads to incomplete or short-term improvement.


4. Inflammation and Prostaglandin Imbalance


Inflammation significantly influences menstrual flow.


Elevated inflammatory prostaglandins can increase:

  • Uterine contractions

  • Blood flow to the uterus

  • Cramping and clotting


This pattern is often associated with:

  • Blood sugar dysregulation

  • Low omega-3 intake

  • Gut inflammation

  • Chronic stress and cortisol imbalance


This is also why nutrition and lifestyle shifts can sometimes noticeably reduce heavy bleeding within a few cycles.


5. Thyroid Imbalances


The thyroid plays a central role in ovulation, cycle timing, and menstrual flow.


Both hypothyroidism and subclinical thyroid dysfunction may contribute to:

  • Heavy periods

  • Longer or irregular cycles

  • Clotting

  • Fatigue, cold intolerance, and brain fog


Many women I see in the San Diego area are told their thyroid is “normal” based on TSH alone, even when deeper imbalances are present.


6. Structural Causes (Fibroids, Polyps, Adenomyosis)


Structural conditions such as:

  • Fibroids

  • Endometrial polyps

  • Adenomyosis

can absolutely contribute to heavy bleeding.


From a naturopathic perspective, it’s also important to recognize that hormonal and inflammatory environments often drive their development and progression. Addressing physiology alongside imaging findings is key.



What to Do First If You Have Heavy Periods

If you are experiencing heavy menstrual bleeding, these are the most important first steps.


1. Stop Normalizing It

Heavy periods are not a rite of passage, a personality trait, or something you have to tolerate indefinitely. They are a clinical sign.


2. Track More Than Just Your Period Dates

Effective tracking includes:

  • Number of bleeding days

  • Flow intensity by day

  • Clot size and frequency

  • PMS symptoms

  • Energy, mood, sleep, and cravings


Patterns across cycles provide far more diagnostic value than a single month.


3. Stabilize Blood Sugar and Reduce Inflammation

Before supplements or protocols, foundations matter:

  • Eat regular, protein-rich meals

  • Avoid skipping meals

  • Emphasize omega-3 fats

  • Reduce ultra-processed foods and excess alcohol

For many women, these steps alone can meaningfully reduce prostaglandin-driven bleeding.


4. Run the Right Labs

Heavy periods deserve more than reassurance.


Depending on your history, a comprehensive evaluation may include:

  • Full iron studies

  • Comprehensive hormone testing

  • Expanded thyroid panels

  • Inflammatory markers

  • Key nutrient assessments


In my naturopathic practice serving San Diego, Encinitas, Solana Beach, and Vista, targeted labs allow us to move beyond guesswork and build truly personalized care plans.



When to Seek Support for Heavy Periods


You should seek further evaluation if:

  • Your bleeding is worsening over time

  • You feel exhausted during or after your period

  • You’ve been told everything is “normal” but don’t feel well

  • You are considering hormonal suppression without clear answers


Heavy periods are one of the clearest signs that your body needs support, not silencing.



FAQ: Frequently Asked Questions About Heavy Periods


What is considered a heavy period?

A heavy period is one that lasts longer than 7 days, requires frequent product changes, involves large clots, or interferes with daily life.


Can hormones cause heavy periods?

Yes. Estrogen dominance, low progesterone, and thyroid dysfunction are among the most common causes of heavy menstrual bleeding.


Can heavy periods lead to anemia?

Yes. Chronic heavy bleeding is a leading cause of iron deficiency and anemia in menstruating women.


Are heavy periods common after birth control?

Heavy or irregular periods are common after stopping hormonal birth control as the body works to restore natural ovulation and hormone production.


Can heavy periods improve naturally?

Yes, when the underlying cause is identified and addressed. Many women experience significant improvement with targeted nutrition, lifestyle shifts, and hormone-supportive care.



Heavy periods are common, but they should not be ignored or normalized. Over time, they can impact iron status, energy, mood, fertility, and overall quality of life.


When you understand the why behind the bleeding, whether hormonal, inflammatory, nutritional, or thyroid-driven, you can move beyond symptom management and toward true healing.


If your period feels like something you have to “power through,” that is your cue to start looking for a practitioner well-versed in the ins and outs of heavy periods and asking better questions.



Want Personalized Support in San Diego County?


If you are dealing with heavy periods and want a root-cause, naturopathic approach, including targeted labs and customized care, consider working with me in San Diego, Encinitas, Solana Beach, or Vista through my clinic or virtual consultations.


How you feel during your menstrual cycle is vital information. It's time you find a doctor who knows how to interpret it.


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*Dr. Francesca works only with patients physically located in California.*



*Disclaimer: Although I am a doctor, I may not be your doctor. The information contained within the pages of this site is for educational purposes only and should not be used to treat conditions. Please consult with your doctor, or make an appointment with me, before implementing any of the treatments, diets, supplements, etc. mentioned in this article.*

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