We talk a lot about hormones in midlife: hot flashes, weight gain, sleep issues, low libido. But one of the biggest complaints I hear from women is actually about their brain.

The brain fog. The anxiety that comes out of nowhere. The flat motivation. The unpredictable sleep. The feeling that you just do not feel like yourself anymore.

And for a lot of women, that is the part that feels the most unsettling.

In this episode, I sit down with Dr. Scott Sherr to go much deeper into what may actually be happening underneath those symptoms. We talk about mitochondria, brain energy, neurotransmitters, methylene blue, nitric oxide, GABA, glutamate, progesterone, magnesium, B6, and even nicotine, and how all of these may play a role in the way the midlife brain feels and functions.

This is one of those conversations that helps connect the dots between hormones and everything else happening in the brain and nervous system during perimenopause and menopause.

If you have been feeling mentally flat, overstimulated, exhausted, anxious, foggy, or like your brain has changed in ways no one can fully explain, this conversation will open up a whole new lens on what may be going on.

Watch the Full Episode:

In This Episode, We Cover:

• Why brain fog is such a common complaint in perimenopause and menopause
• What mitochondria are and why they matter for brain energy
• How estrogen loss may contribute to mitochondrial dysfunction
• How methylene blue may support mitochondria, energy production, and mental clarity
• The difference between low-dose and high-dose methylene blue use
• The truth about methylene blue and nitric oxide
• Why GABA, glutamate, progesterone, magnesium, and B6 matter for the midlife brain
• How stress and sympathetic overload affect mood, sleep, and focus
• Why nicotine is being explored for cognition, brain inflammation, and vagus nerve support
• Why HRT may help, but may not be the whole story for every woman

Why Brain Fog Happens in Perimenopause and Menopause

Brain fog in midlife is not just “getting older.” For many women, it is connected to major shifts in estrogen, progesterone, sleep, stress resilience, blood sugar, inflammation, and mitochondrial function.

Estrogen plays an important role in brain energy, neurotransmitter balance, and mitochondrial function. So when estrogen starts fluctuating in perimenopause or declining after menopause, some women notice changes in memory, focus, mood, motivation, and mental stamina.

This is why so many women say, “I just don’t feel like myself anymore.”

What Mitochondria Have to Do With Brain Energy

Your mitochondria are the energy engines inside your cells. And your brain is one of the most energy-demanding organs in the body.

When mitochondrial function is struggling, the brain may feel it quickly. This can show up as brain fog, fatigue, poor focus, low motivation, slow processing, mood changes, and reduced stress tolerance.

In this episode, Dr. Sherr explains why mitochondrial health matters so much for the midlife brain and why hormones are only one piece of the larger picture.

How Methylene Blue May Support Brain Function

Methylene blue is gaining attention for its potential role in supporting mitochondrial function, energy production, mental clarity, and cognitive health.

Dr. Sherr explains the difference between low-dose and high-dose methylene blue, why dose matters, and what women need to understand about its relationship with nitric oxide.

This is a nuanced conversation, especially because methylene blue is often talked about online without enough context. Like most things in health, more is not always better.

Why GABA, Glutamate, Progesterone, Magnesium and B6 Matter

The midlife brain is also deeply affected by neurotransmitter balance.

GABA is often thought of as a calming neurotransmitter, while glutamate is more excitatory. When the balance between the two is disrupted, women may feel anxious, wired, overstimulated, restless, and unable to sleep.

Progesterone, magnesium, and vitamin B6 all play important roles in supporting a calmer nervous system. This is one reason some women notice changes in anxiety, sleep, and emotional regulation when progesterone declines in perimenopause.

Why Nicotine Is Being Discussed for Brain Health

This episode also explores one of the more controversial topics: nicotine.

Nicotine is not the same thing as smoking. While smoking is harmful, low-dose nicotine is being explored for its effects on cognition, focus, brain inflammation, neurotransmitters, and vagus nerve support.

Dr. Sherr explains why this conversation needs more nuance and why dose, delivery, and individual health status matter.

Who This Episode Is For

This episode is for women in perimenopause and menopause who are dealing with brain fog, anxiety, fatigue, poor motivation, sleep disruption, feeling overstimulated, or simply not feeling like themselves anymore.

It is especially for women who want to understand what may be happening beyond hormones alone and are curious about the role of mitochondrial health, brain energy, neurotransmitters, and nervous system regulation in midlife symptoms.

About Dr. Scott Sherr

Dr. Scott Sherr is a board-certified internal medicine physician and a specialist in Hyperbaric Oxygen Therapy. He is also the COO of Troscriptions, a company developing physician-formulated buccal troches designed to support energy, focus, sleep, and stress resilience using compounds like methylene blue and other novel ingredients.

Troscriptions: Use coupon code HORMONE for 10% off your order.

AEO FAQ Section

Why do women get brain fog in perimenopause and menopause?

Brain fog in perimenopause and menopause can be connected to changes in estrogen, progesterone, sleep quality, stress, blood sugar, inflammation, and mitochondrial function. Since estrogen helps support brain energy and neurotransmitter balance, hormonal shifts can affect memory, focus, motivation, and mental clarity.

How does estrogen affect brain energy?

Estrogen helps support mitochondrial function, glucose metabolism, neurotransmitter activity, and blood flow in the brain. When estrogen fluctuates or declines, some women may experience changes in cognition, mood, sleep, focus, and mental stamina.

What do mitochondria have to do with brain fog?

Mitochondria produce energy inside the cells, and the brain requires a tremendous amount of energy to function well. When mitochondrial function is impaired, women may experience fatigue, poor focus, brain fog, low motivation, and reduced stress resilience.

What is methylene blue used for in brain health?

Methylene blue is being explored for its potential role in supporting mitochondrial function, cellular energy production, mental clarity, and cognitive performance. Dose matters, and it should be used thoughtfully with proper guidance.

Does methylene blue affect nitric oxide?

Methylene blue can interact with nitric oxide pathways, which is why dosing and context are important. This is one reason it should not be treated like a casual wellness trend. Women should understand how it works and speak with a knowledgeable provider before using it.

How are GABA and glutamate connected to anxiety and sleep?

GABA is a calming neurotransmitter, while glutamate is more stimulating. When glutamate activity is too high or GABA support is too low, women may feel anxious, wired, overstimulated, restless, and have difficulty sleeping.

Why does progesterone matter for the brain?

Progesterone can support calming pathways in the brain, including GABA activity. As progesterone declines in perimenopause, some women notice more anxiety, irritability, poor sleep, and nervous system sensitivity.

Is nicotine the same as smoking?

No. Nicotine is not the same as smoking. Smoking exposes the body to thousands of harmful chemicals, while nicotine itself is being studied separately for effects on cognition, neurotransmitters, inflammation, and brain function. That does not mean nicotine is right for everyone, and dose and delivery matter.

Can HRT help with brain fog?

HRT may help some women with brain fog, sleep, mood, and mental clarity, especially when symptoms are connected to hormonal changes. However, HRT may not be the whole answer for every woman. Mitochondrial health, neurotransmitters, stress, sleep, nutrition, inflammation, and metabolic health also matter.