Ages 40 to 65 Are Critical for Preventing Stroke and Dementia—What Doctors Want Women To Know
New research reveals why midlife matters most for brain health—plus how to stay healthy at any age
Key Takeaways
- New research suggests age 40 to 65 is a key window for reducing stroke and dementia risk.
- Menopause-related hormone changes may affect blood vessels and future brain health risks.
- Managing blood pressure, sleep and exercise support long-term brain health and function.
When it comes to health, sometimes it can feel like you’re racing against the clock to adopt the habits that support your wellbeing and longevity. But when so much depends on information you may not have had years ago, whether that’s learning the exercise routine or the eating habits that work best for your body, it’s easy to wonder: Did I run out of time to make a difference? If you’re between 40 and 65 and concerned about protecting your brain and heart from stroke and dementia, you haven’t missed your window. In fact, new research suggests that midlife may be one of the most important times to reduce your risk. Here’s what to know—and why there’s still so much you can do to stay healthy after 65, too.
What is a stroke?
When a stroke occurs, part of the brain suddenly loses blood flow or a blood vessel in the brain ruptures, explains Rab Nawaz, MD, a board-certified neurologist. “Most strokes are ischemic, meaning a clot blocks an artery,” says Dr. Nawaz. “Others are hemorrhagic, meaning bleeding damages brain tissue.”
Dr. Nawaz adds that risk factors for stroke include:
Woman's World Answers
- High blood pressure
- High cholesterol
- Smoking
- Obesity
- Sleep apnea
- Atrial fibrillation (AFib)
- Blood vessel disease
- Diabetes
What is dementia?
Dementia refers to a decline in thinking, use of language, judgment, memory or daily function that is so severe it begins to interfere with living independently, says Dr. Nawaz. “Alzheimer’s disease is the most common cause, but strokes and small vessel disease can cause vascular dementia, and many people have a mixture of both,” explains Dr. Nawaz.
He adds that the following factors are associated with a greater risk of developing dementia:
- Hearing loss
- Inactivity
- Smoking
- Depression
- Poor sleep
- Social isolation
- Older age
- Vascular risk factors (high blood pressure, diabetes and high cholesterol)
New research on stroke and dementia prevention in midlife
If there’s one crucial time to focus on stroke and dementia prevention, it’s right now, during your midlife years. Research in Stroke suggests that hormonal changes during menopause, including declining estrogen levels, create unique challenges for women’s brain health and future stroke risk, making ages 40 to 65 a particularly important time to take steps to help prevent stroke and dementia.
“I think the paper makes an important point: Midlife is when many preventable risks begin to accumulate, even though stroke and dementia may not appear until decades later,” explains Dr. Nawaz.
So what changes in the body occur during menopause that influence risk of stroke and dementia? Joseph Kim, MD, vascular neurologist at Touro College of Osteopathic Medicine explains.
“Both estrogen and progesterone play important roles when it comes to the health of your blood vessels,” says Dr. Kim. “They promote growth and help to mitigate wear and tear on your blood vessels. Estrogen, additionally, has been found to enhance growth and plasticity of brain networks, affecting cognition. During menopause, both levels of estrogen and progesterone decline, and that has been associated with a variety of factors that increase the risk of stroke and dementia.”
How to reduce your stroke and dementia risk in midlife
After understanding why midlife is such an important time to prioritize a healthy lifestyle that promotes longevity, your next question is likely: Okay, now what do I do? Dr. Nawaz shares three tips to help you stay on track:
Stay on top of your blood pressure
Keep your routine doctor’s appointments, and if you already have received a high blood pressure reading in the past, consider using a home blood pressure reading device to keep tabs your numbers and spot any changes early on, says Dr. Nawaz. “Blood pressure damages small brain vessels quietly over time, so controlling it is one of the strongest ways to reduce stroke and vascular cognitive risk,” he adds.
Get regular physical activity
Committing to movement and exercise can feel overwhelming, especially when you already have a lot on your plate. That’s why Dr. Nawaz recommends getting movement in whatever way feels good to you, starting with 10-minute sessions and gradually building toward about 150 minutes of moderate activity each week (that’s roughly 22 minutes a day).
He says activities like dancing, cycling, swimming or simply walking all help increase the amount of blood flow to the brain while also offering benefits like improving blood pressure, mood, sleep and insulin sensitivity.
Take sleep seriously
You hear it all the time, that sleep is key for health, but here’s a reminder to treat your sleep with the same level of seriousness as you do other aspects of your health. Dr. Nawaz says sleep apnea increases strain in blood vessel function, and interrupted sleep caused by waking up at night worsens blood pressure.
Preventing stroke and dementia after 65
While the ages of 40 and 65 are a particularly important time to focus on preventing stroke and dementia, you’re never too late (or too early!) to focus on prioritizing brain and heart health.
“Under 40, the focus should include healthy blood pressure, smoking avoidance, physical activity, sleep, migraine and contraceptive counseling when relevant and attention to pregnancy-related complications,” says Dr. Nawaz. “After 65, managing blood pressure, diabetes, cholesterol, hearing loss, sleep, mobility, medications and social connection can still meaningfully reduce stroke risk and support cognitive health. The same core principles apply across adulthood.”
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