Brain fog in perimenopause and menopause

Written by the Progyny Editorial Team. Reviewed by the Progyny Clinical Team — August 2026.

During peri/menopause (perimenopause and menopause), it’s common to notice issues with memory and thinking. This can be worrisome, but the “brain fog” during this stage of life is usually temporary.

Let’s talk more about brain fog, along with treatments and strategies that may help you cope. Your healthcare provider can provide personalized guidance for you.

What causes brain fog?

Estrogen is well known for its roles in reproductive and sexual health. It’s also important for brain function, including memory and mood regulation. When estrogen goes down in peri/menopause, it can temporarily affect some parts of how the brain works.

In addition, low estrogen can cause symptoms like night sweats and anxiety that disrupt sleep. Shifting hormones can also lead to mood swings, joint aches, fatigue, and changes in libido and sex life.

And, many people face a fair amount of stress in midlife. When you add all this together, it’s no wonder that peri/menopause may affect our mental focus.

What does brain fog feel like?

Not everyone experiences brain fog, and it can feel different for each person. Some people may just feel a bit off. Others say they don’t feel like themselves.

With brain fog, you may have:

• Trouble focusing, which may seem more noticeable (at least to you) at work
• Memory lapses (like a hard time thinking of a word, misplacing your keys, or forgetting why you came into a room)
• Decreased confidence at work or with activities you’re skilled in
• Challenges remembering and processing new ideas that you read
• Lower motivation or energy

For almost everyone, these issues are temporary. If you’re concerned, it’s a good idea to talk to your provider.

What can I do about brain fog?

There are approaches to help you feel less bothered by cognitive changes due to peri/menopause. There’s also a lot you can do to care for your brain health as you age.

Menopause hormone therapy

Menopause hormone therapy (MHT) may help ease night sweats, hot flashes, and mood changes that lead to the development of brain fog. It’s not right for everyone, so ask your provider what’s recommended for you. Your provider will also work with you to consider other possible causes of cognitive changes.

MHT seems to help brain fog primarily by helping symptoms like hot flashes and night sweats. (These symptoms are problematic for sleep and mental sharpness.) For some people, MHT can also help with mood. But for unknown reasons, giving estrogen back in the form of MHT does not always correct brain fog.

Timing of MHT is important. MHT should begin before age 60 or within 10 years of menopause.

• If MHT starts too late, it may actually raise the risk of Alzheimer’s disease and dementia.
• On the other hand, if you had both ovaries removed before 40 years old, hormone replacement therapy may offer extra protection for your memory and lower the risk for dementia.

Lifestyle changes

You can help protect your memory and brain health as you age with lifestyle strategies.

• Prioritize sleep. Sleep is key for both mental sharpness and healthy aging. Work with your provider if you’re struggling to sleep well.
• Be physically active. Exercise is so good for you – and its benefits extend to brain health and helping prevent cognitive decline.
• Stay mentally engaged. Keep learning new things and doing fun activities that challenge your mind. Some ideas include hobbies like music, dance, crafting, and creative writing.
• Seek social connection. Carve out time for family, friends, or your community and hobbies. Volunteering and regular social activity are linked with brain health as we age.
• Eat balanced, healthy foods. The Mediterranean eating plan, high in omega-3 fatty acids for brain health, is a great way to do this. It emphasizes fruits, vegetables, nuts and beans, fish, lean meat, whole grains, and olive oil.
• Limit alcohol and avoid smoking. These can harm your sleep and may raise the risk of memory issues.
• Think about your heart health. Work with your provider to manage risks for heart disease (like high blood pressure, diabetes, or high cholesterol). These may all affect your long-term brain health.

Finding the support you deserve

Many people struggle with focus, memory, and mood during peri/menopause. You don’t need to power through or deal with these concerns alone.

We encourage you to share how you’re doing with your provider. Your Progyny Care Advocate (PCA) can also help you connect with a menopause specialist who has experience with your symptoms. Your PCA can provide guidance, coping strategies, or a listening ear on your menopause journey.

Explore related: 

• Perimenopause: what you need to know

• Mood changes in perimenopause and menopause

• Menopause hormone therapy: Is it right for me?

Disclaimer: The information provided by Progyny is for educational purposes only and is not medical advice. Always consult a qualified healthcare provider for medical guidance.