These Hobbies Could Lower Your Alzheimer’s Risk, New Study Suggests
Key Points
Dementia affects millions of people worldwide, presenting profound challenges to individuals, families and health care systems. While we often associate cognitive decline with older age, the underlying changes in the brain actually begin during midlife. Subtle shifts can emerge decades before any clinical symptoms appear. Because these changes start early, we have a critical window of opportunity to take action and support our brain health long before memory issues become apparent.
The promising news is that while there are no magic bullets, there are steps we can take that may help protect our brain health as we age. By understanding and addressing factors like blood pressure, diabetes, hearing, mental health and lifestyle habits during midlife, we have the potential to influence our chances of staying cognitively healthy in the future.1
With this in mind, researchers set out to explore which mix of medical, genetic and lifestyle factors most strongly influence brain health in people ages 40 to 59. Drawing on data from a large group of adults, they examined not just individual risks and habits but also how these elements interact long before dementia symptoms typically appear. The results were published in Alzheimer’s and Dementia.2
How Was the Study Conducted?
To understand how lifestyle and medical history affect midlife brain health, researchers examined data from the PREVENT Dementia program. They focused on 587 adults between the ages of 40 and 59. At the start of the study, all participants were cognitively healthy, meaning they had no clinical signs of memory impairment or dementia. The research team recruited these individuals from five university sites across the United Kingdom and Ireland. Notably, they built the study group so that roughly half of the participants had a parent with a history of dementia.
The researchers wanted to see how various risk factors and protective habits interact decades before dementia symptoms typically appear. To do this, they evaluated participants across four main areas:
- Cognitive Testing: Participants completed a comprehensive battery of tests to measure their baseline brain function. These assessments looked at attention, language skills, visuospatial abilities and different types of memory.
- Modifiable Risk Factors: The study tracked 10 health and lifestyle factors that we can potentially change or manage with medical care. These included blood pressure, cholesterol levels, body mass index, blood sugar, hearing ability, sleep quality, signs of depression, smoking habits, alcohol intake and any history of traumatic brain injury. The team gathered this information using physical exams, blood tests, structured interviews and standard medical questionnaires.
- Nonmodifiable Risk Factors: Researchers also recorded baseline factors that participants cannot change. This included their age, biological sex and family history of dementia. Additionally, the team used blood samples to test for the APOE ε4 gene, which is a widely recognized genetic risk factor for late-life Alzheimer’s disease.
- Contributors to Cognitive Reserve: To measure protective factors, the team used a detailed questionnaire about life experiences. The questionnaire gathered information on formal education, career paths and how often participants took part in physically, socially or intellectually stimulating activities, such as playing an instrument, reading, exercising, socializing or traveling.
What Did the Study Find?
The researchers used advanced statistical models to look at all 17 factors together to see which habits and factors had the biggest impact on brain performance.
The standout finding was the power of stimulating activities. Engaging in physical, social and intellectual hobbies showed the strongest positive link to midlife cognitive performance. In fact, the positive association of these stimulating activities was larger than the negative impact of every single modifiable risk factor assessed and even outweighed the genetic risk associated with the APOE ε4 gene. Education also showed a significant positive relationship with cognitive scores.
When researchers broke down these stimulating activities, they found that the benefit did not come from just one magical hobby. Instead, participating in a variety of activities, such as socializing, playing music, making art, exercising, reading, speaking a second language and traveling, created a cumulative protective effect.
On the flip side, the study identified several factors linked to poorer cognitive performance. Among the modifiable risks, depressive symptoms had the strongest negative association with midlife brain function. This was closely followed by a history of traumatic brain injury, diabetes, high blood pressure, hearing impairment and poor sleep. For nonmodifiable factors, being male and being older were also associated with slightly lower cognitive scores.
The cognitive skills most affected by both the positive and negative factors were episodic and relational memory, which are the types of memory we use to recall specific events and the relationships between different pieces of information.
How Does This Apply to Real Life?
These findings highlight how day-to-day choices in midlife may influence brain health in the years ahead. While there is no guaranteed way to prevent dementia, certain activities and healthy habits are linked to better cognitive outcomes, even before signs of memory problems appear. It’s never too early to consider steps that might support long-term brain function.
First, focus on building your cognitive reserve through a rich, varied lifestyle. You do not need to master a single difficult task—instead, aim for a diverse mix of activities. Read books, join a walking group, learn a few phrases in a new language, take up a creative hobby or simply make it a point to socialize regularly with friends and family. This broad engagement acts as a workout for your brain networks.
Second, work with a health care provider to manage medical conditions that can quietly impact your brain. Take symptoms of depression seriously and seek treatment. Aim to keep your blood pressure and blood sugar in a healthy range. Consider getting your hearing tested if you notice changes, and prioritize getting a good night’s sleep.
Our Expert Take
This study published in Alzheimer’s and Dementia suggests that participating in a variety of hobbies—particularly socializing, playing music, making art, exercising, reading, speaking a second language and traveling—may lower the risk of Alzheimer’s disease. This research paints a clearer picture of how our daily lives shape our cognitive resilience.
Building cognitive reserve through stimulating activities can be a highly effective, accessible and enjoyable strategy for brain health. This study shows that dementia risk reduction is not just about avoiding negative factors like high blood pressure or head injuries. It is equally about actively introducing positive, enriching experiences into our routines.
Midlife is a crucial window. By managing medical risks and staying active socially, physically and intellectually, you could build a stronger, more resilient brain for the future.