Low Estrogen Symptoms: Top Causes and Treatments

What Is Perimenopause and Why Does Estrogen Drop?

Perimenopause is the transitional phase leading up to menopause, when the ovaries start making less estrogen and progesterone. It can stretch over several years or be quick, and usually starts in our 40s. Like most things in life, these details vary from person to person. 

One consistency, though, is that perimenopause ends and menopause is official when you’ve gone 12 months in a row without a period, and estrogen levels stay at a lower baseline. 

In the lead-up, estrogen rises and falls unpredictably, and those swings drive many common symptoms, from erratic cycles to breast tenderness and mood changes. 

Here’s what’s happening in the body during this transition.

Recognizing the Symptoms of Low Estrogen in Perimenopause

Low estrogen in perimenopause usually shows up as a mix of changes, so they don’t necessarily seem related at first. 

It can be helpful to see the symptoms broken down into a couple of categories:

• Vasomotor symptoms. Hot flashes, night sweats, and sleep problems all fall into this category. You might get a random wave of heat or wake up in the middle of the night, sweating and with a racing heart. 

• Mood and cognitive changes. As hormone levels fluctuate, some women experience more anxiety, low mood, emotional volatility, or a general sense of irritability. Brain fog (translation: forgetfulness or having a hard time concentrating) is also common.

• Physical changes. These can really run the gamut, from vaginal dryness and pain during sex, to lower libido and more joint aches, drier and more fragile skin, or hair shedding. 

• Lesser-known symptoms. Some seemingly more random symptoms include things like changes in taste or smell sensitivity, heart palpitations, and dizzy spells. 

Not every symptom is caused by estrogen decline, and a lot of them look similar to thyroid disorders and mental health conditions. But when several changes emerge around the same time, especially alongside irregular cycles, it tends to point to shifting hormone levels. 

What Causes Low Estrogen in Perimenopause?

During perimenopause, ovarian aging leads to more erratic estrogen production, and the predictable hormonal interplay between estrogen and progesterone starts to break down.

Essentially, women are born with a finite number of ovarian follicles (which is the main place where estrogen and progesterone are produced). Over time, that supply dwindles. And as our ovaries age, they get less responsive to hormonal signals from the brain. From there, estrogen production becomes inconsistent. 

At the same time, ovulation also becomes less predictable. In many cycles during perimenopause, ovulation doesn’t happen at all (these are called anovulatory cycles). And without ovulation, progesterone production also falls. 

But this gradual transition (i.e., perimenopause) isn’t the same thing as menopause itself:  menopause is defined after 12 months in a row without a period, when estrogen levels stabilize at a lower baseline. Perimenopause, on the other hand, entails more volatility.

It’s also worth mentioning that low estrogen can occur for other reasons, too, like: 

• Surgical removal of the ovaries

• Certain chemotherapy treatments

• Medications that suppress ovarian function

• Eating disorders

• Extreme exercise

• Thyroid disease

• Some chronic illnesses 

When it comes to figuring out the reason for low estrogen, the context will matter. Your age, cycle history, symptoms, and general health can all help a specialist figure out if declining estrogen is because of perimenopause or another condition that requires a different treatment.

How to Tell If Your Symptoms Are Because of Low Estrogen

Perimenopause is indeed a clinical diagnosis, but because hormone levels fluctuate day to day (sometimes even hour to hour), a lab test isn’t usually the best diagnostic tool. 

Instead, your doctor might look for clues and symptoms such as: 

• Irregular cycles 

• Hot flashes

• Sleep issues

• Mood shifts

• Vaginal dryness 

• Weight gain 

• Skin and hair changes 

When several new symptoms crop up at the same time (especially in your 40s), it’s usually thanks to shifting hormones. Still, something else could be going on. Thyroid conditions, for example, can look like anxiety or also lead to changes in your cycle, while depression may show up as low mood and lead to sleep problems.

If your symptoms stick around, get worse, or just don’t make sense to you, talk with a healthcare provider. Heavier-than-usual bleeding, bleeding after a long gap without periods, sudden severe headaches, or unexpected weight changes are all reasons to schedule a visit sooner.

The best next steps are to work with a specialist who can help you figure out what’s happening and how to move forward in a way that’s right for you. 

Treatment Options: Hormonal and Non-Hormonal Approaches

Treatment depends on your symptoms, medical history, and what you feel most comfortable with. But the good news is that there are several treatment options. 

Menopause Hormone Therapy for Full-body Symptoms 

Systemic menopausal hormone therapy (MHT) is the most effective treatment for full-body symptoms. It works by replacing the estrogen that your ovaries are no longer producing consistently.

Estrogen can be delivered in several forms, like:

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• Oral estradiol pills

• Transdermal patches

• Topical gels or sprays

• Low-dose combo birth control pills (if you still have your period) 

If you still have a uterus, progesterone is typically added to protect the uterus, too. 

Non-hormonal Treatments for Perimenopause 

Not everyone wants or can use hormones. Some non-hormonal prescription options include certain antidepressants that can help with the mood changes, as well as hot flashes, and gabapentin, which can also help reduce hot flashes and support sleep.

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A provider might recommend other meds, too, depending on your main symptoms.

The right plan depends on the whole picture. So, your cardiovascular history, clotting risk, family history of breast cancer, and your own comfort level all matter. A menopause-trained provider can talk through the tradeoffs, adjust dosing if needed, and help you decide what feels reasonable for you.

Managing Vaginal and Sexual Symptoms of Low Estrogen

As estrogen declines, many women notice changes in vaginal and urinary comfort. With lower estrogen, the vaginal lining becomes thinner, drier, and less elastic. This can lead to changes like:

• Decreased blood flow and lubrication

• Uncomfortable or painful sex

• More frequent urinary urgency, burning, or recurrent urinary tract infections

These changes fall under the term genitourinary syndrome of menopause, or GSM. Despite the name, these symptoms can start during perimenopause, not just after menopause.

Vaginal estrogen therapy is one of the most effective treatments for GSM. Like systemic menopause hormone therapy, there are a few forms to choose from, including cream, tablet, or ring form. It works by delivering a low dose of estrogen directly to the vagina to address those local symptoms. It’s considered safe for most women since it involves minimal systemic absorption.

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That being said, some people prefer non-hormonal options. If you’re one of them, you may want to explore things like vaginal moisturizers for day-to-day dryness and lubricants to reduce friction during sex. In some cases, pelvic floor therapy or sexual health counseling can help you work through discomfort and anxiety related to any pain

Lifestyle Changes and Natural Strategies for Symptom Relief

Lifestyle changes can't stop perimenopause from happening, but they can make it feel a little more manageable.

A few habits tend to make a difference:

• Move your body regularly. Strength training matters more and more as we age. Muscle mass declines in midlife, and preserving it helps with blood sugar regulation and bone strength. Cardio should still be part of the puzzle, as it supports heart health, and some research shows that it may also ease hot flashes and help with mood.

• Pay attention to protein and other nutrients. There isn’t a “menopause diet,” per se,  but shooting for consistent, balanced meals can go far. Reading up on nutrition is a great way to make sure your plate is supporting your health. But, at a glance, load up on whole foods with lots of protein, calcium, and vitamin D while avoiding heavily processed, sugary, and greasy things. 

• Work on getting better sleep. You might not be able to stop night sweats altogether, but you can avoid certain triggers (looking at you, alcohol, late screens, and sporadic bedtimes). Figuring out your own triggers and then making small changes accordingly can help with hot flashes and sleep quality over time.

• Look into supplements. There are lots of herbal products marketed for hormones, like black cohosh and phytoestrogens. While some women might feel better when they take them, the evidence is still pretty mixed. Either way, it’s worth checking in with your doctor before starting something new. 

Generally, these work best as part of a larger plan and set the foundation rather than working as a standalone solution.

When to Get Help: Partnering with Your Healthcare Provider

If hot flashes are keeping you up at night, your mood feels harder to manage, bleeding is heavier than usual, or symptoms start affecting work or relationships, it may be time to check in with a provider.

A clinician trained in menopause can help sort out what’s connected to changing hormones and what might not be. Whether you choose to schedule an in-person visit or a virtual one,  having someone walk through everything with you is a great place to start.  

Frequently Asked Questions Why does estrogen drop during perimenopause?

Estrogen levels drop and become erratic because of ovarian aging. You are born with a finite number of ovarian follicles—the primary site of hormone production—which naturally dwindles over time. As you reach your 40s, your ovaries become less responsive to hormonal signals from the brain, leading to inconsistent estrogen production. Additionally, you may experience "anovulatory cycles" where ovulation does not occur, causing a simultaneous drop in progesterone.

What are the most common symptoms of low estrogen?

Low estrogen affects multiple systems in the body and is generally categorized into three areas. Vasomotor symptoms include hot flashes, night sweats, and sleep disturbances. Mood and cognitive changes often manifest as increased anxiety, emotional volatility, and "brain fog." Physical changes can include joint aches, hair shedding, and genitourinary symptoms like vaginal dryness or pain during sex. Because these symptoms can mimic thyroid or mental health conditions, a clinical evaluation is often necessary.

What are the best treatment options for perimenopause symptoms?

Treatment is highly personalized and ranges from hormonal to lifestyle-based approaches. Menopause Hormone Therapy (MHT) is the most effective way to address full-body symptoms by replacing the estrogen your ovaries no longer produce. For those who cannot or choose not to use hormones, non-hormonal prescriptions like certain antidepressants or gabapentin can help manage mood and hot flashes. Additionally, localized vaginal estrogen can treat dryness and discomfort with minimal absorption into the rest of the body.