Reviewed by the Help Dementia Editorial Team — our editors review every article for accuracy against guidance from the National Institute on Aging, the Alzheimer’s Association, and peer-reviewed sources.
The good news about dementia is that you’re not helpless. Up to 45% of dementia cases are actually preventable through lifestyle changes and medical management, according to research from the Lancet Commission—which means the decisions you make today can measurably lower your risk of cognitive decline tomorrow. If you’re worried about dementia or have a family history of it, there are six concrete things you can do right now that have solid scientific backing: address hearing loss, get your vision checked, move your body regularly, eat a brain-protective diet, control your blood pressure, and engage in structured lifestyle programs rather than trying to go it alone.
These aren’t vague wellness suggestions; they’re based on the 14 modifiable risk factors researchers have identified as the biggest levers for preventing dementia. This article covers the specific actions that work—with real numbers behind them—and why timing matters. The research shows that waiting doesn’t help. Some of these changes take weeks to feel meaningful, while others deliver measurable benefits within months.
Table of Contents
- Why Understanding Your Risk Factors Matters First
- Correct Untreated Hearing Loss With Hearing Aids
- Get Regular Vision Exams and Correct Vision Problems
- Move Your Body for at Least 150 Minutes Weekly
- Eat a Mediterranean or MIND Diet for Brain Protection
- Take Control of High Blood Pressure Now
- Engage in Structured Lifestyle Programs and Social Connection
- Conclusion
Why Understanding Your Risk Factors Matters First
Before you can address dementia risk, you need to know what you’re actually fighting. Researchers have identified 14 modifiable risk factors that together account for up to 45% of dementia cases: low education, hearing loss, high blood pressure, smoking, obesity, depression, physical inactivity, diabetes, alcohol overuse, traumatic brain injury, air pollution exposure, social isolation, untreated vision loss, and high LDL cholesterol. Notice that nearly all of these are things you can actively change—this isn’t about genetics alone. The reason these factors matter is that they often compound. Someone with untreated hearing loss, high blood pressure, and a sedentary lifestyle isn’t just adding risk; these factors interact and amplify each other’s impact on the brain.
Understanding this means you can prioritize: if you’ve only got the bandwidth to tackle two things this month, you can focus on the ones with the biggest evidence base. The landmark finding here is that you don’t need to fix everything at once. The U.S. POINTER study (which tracked over 2,000 participants in 2025-2026) found that structured lifestyle programs were more effective than self-guided changes, but even partial improvements moved the needle. If you’re reading this and thinking “I can’t do all six of these things perfectly,” that’s okay—even addressing three or four of them meaningfully will reduce your risk.
Correct Untreated Hearing Loss With Hearing Aids
This one surprises people, but untreated hearing loss is one of the most actionable risk factors. If you’re under 70 and have untreated hearing loss, using hearing aids can reduce your dementia risk by 61% over a 20-year period, according to research cited by Alzheimers.gov. Why does this matter so much? When you can’t hear clearly, your brain has to work harder to process sound, which diverts cognitive resources. Over years, this extra strain contributes to cognitive decline. It’s not just about missing conversation—it’s about the constant neural strain of struggling to understand the world around you.
Here’s a practical reality: many people avoid getting hearing aids because of stigma or cost, which means they delay decades. If you’ve noticed yourself asking people to repeat themselves more often, struggling in noisy restaurants, or turning up the TV, it’s worth getting tested. A hearing test is simple and usually free at audiology clinics. The investment in hearing aids typically ranges from $1,000 to $6,000 depending on the technology, but many insurance plans cover them and some states have hearing aid assistance programs. Compare this to the cost and suffering of cognitive decline, and the math changes quickly. Unlike some dementia prevention strategies that require ongoing effort, getting fitted for hearing aids is a one-time intervention that works.
Get Regular Vision Exams and Correct Vision Problems
Vision loss is the flip side of the hearing equation—untreated vision loss increases dementia risk by 50% in adults 65 and older, according to Alzheimers.gov. Like hearing loss, vision problems force your brain to work harder and reduce the stimulation your brain receives from your environment. If you can’t see well, you interact less with the world, become more socially isolated, and put extra load on remaining sensory systems. This is why correctable vision problems (glasses, cataracts surgery, glaucoma treatment) are so critical. If you haven’t had an eye exam in the past year or two, schedule one now—especially if you’re over 60.
Many people assume that small vision changes are just “normal aging” and don’t get them corrected. That’s a costly mistake. An optometrist or ophthalmologist can catch early glaucoma, macular degeneration, or cataracts before they significantly impact your vision. For cataracts specifically, surgery is routine and highly effective. The timeline matters here too: if you wait until your vision is severely impaired, correcting it may not reverse all the social isolation and cognitive strain that accumulated. Getting glasses updated or cataracts removed now prevents years of unneeded burden on your brain.
Move Your Body for at Least 150 Minutes Weekly
Physical activity is one of the few interventions that show up in dementia prevention research across every major health organization. The target is 150 minutes of moderate-intensity physical activity per week—that’s about 30 minutes a day, five days a week, or roughly a brisk 30-minute walk. This doesn’t require a gym membership or training for a marathon. Walking, swimming, cycling, dancing, or any activity that gets your heart rate up counts. The mechanism is clear: exercise increases blood flow to the brain, promotes the growth of new brain cells, and reduces inflammation that damages cognitive function.
Here’s the limitation you should know about: intensity matters. A leisurely stroll around the neighborhood is better than nothing, but you’ll see bigger benefits from activity that actually challenges you—where you’re breathing a bit harder or slightly out of breath during conversation. If you have joint problems or other health issues, modifications exist: water aerobics is gentler on joints, chair exercises work for mobility-limited people, and resistance training (lifting weights or using resistance bands) counts toward the goal too. The best exercise is the one you’ll actually do, so if you hate running, don’t run. But do pick something you can do consistently, because the brain-protective benefits only stick around if you keep moving.
Eat a Mediterranean or MIND Diet for Brain Protection
What you eat directly impacts your dementia risk. The Mediterranean diet (high in vegetables, fish, olive oil, and low in saturated fats) and the MIND diet (which stands for Mediterranean-DASH Intervention for Neurodegenerative Delay) both show evidence for reducing cognitive decline according to the CDC. These aren’t restrictive diets; they’re eating patterns built around whole foods. The Mediterranean diet emphasizes fish, legumes, whole grains, vegetables, and olive oil while limiting red meat. The MIND diet is similar but specifically designed for brain health, emphasizing leafy greens, berries, nuts, and fish while limiting processed foods and butter. One practical note: you don’t have to be perfect.
Research doesn’t show that you need to eat Mediterranean food exclusively—it shows that moving in that direction reduces risk. If you currently eat a lot of processed foods and red meat, adding more vegetables and fish, cooking with olive oil instead of butter, and swapping chips for nuts will move the needle. A warning though: if you have diabetes or other chronic conditions, talk to your doctor or a dietitian about how to adapt these eating patterns for your specific situation. Also, “healthy diet” doesn’t mean expensive—frozen vegetables are as nutritious as fresh ones, canned fish (in water) is affordable, and dried beans are inexpensive protein. The barrier to healthy eating is rarely knowledge; it’s usually habits and convenience. If you’ve been eating the same way for years, changing overnight doesn’t work. Swap one meal or snack a week to something aligned with these eating patterns, then gradually add more.
Take Control of High Blood Pressure Now
High blood pressure (hypertension) damages blood vessels throughout your body, including the tiny vessels that feed your brain. Treating hypertension with medication and lifestyle changes reduces your risk of vascular dementia specifically, according to the CDC. If you haven’t had your blood pressure checked recently, do it—many pharmacies do free screening. Normal blood pressure is below 120/80 mmHg; if yours is consistently higher, talk to your doctor. Controlling blood pressure involves two main approaches: lifestyle changes and medication if needed. Lifestyle changes include reducing salt intake (which often means cutting processed foods), staying physically active, limiting alcohol, managing stress, and maintaining a healthy weight.
These overlap heavily with the diet and exercise recommendations already mentioned. If lifestyle changes alone don’t bring your pressure down, medication is necessary—and that’s not a failure. Different classes of blood pressure medications work differently for different people, and your doctor can find what works for you. A warning: some people feel fine with high blood pressure and skip treatment because they don’t notice symptoms. That’s dangerous. High blood pressure does damage silently, so don’t rely on how you feel; rely on the measurements.
Engage in Structured Lifestyle Programs and Social Connection
The U.S. POINTER study found something important: coached, structured lifestyle programs were more effective at preventing cognitive decline than individual self-guided changes. This makes sense. A program gives you accountability, guidance from people who know what they’re doing, and often group support—which also addresses social isolation, another risk factor.
Structured programs typically combine exercise, cognitive training, nutrition guidance, and social engagement all together, which is more effective than tackling these one at a time on your own. If you’re looking for such programs, check with your local senior center, community health organizations, or Alzheimer’s Association chapters in your area—many offer evidence-based programs designed specifically for dementia prevention. Even if formal programs aren’t available, building regular social connection into your life matters. Joining a walking group, a book club, a class, or volunteering gives you multiple benefits at once: social engagement (which reduces dementia risk on its own), physical activity if it’s active, and mental stimulation. The social component isn’t a bonus; it’s part of what makes these strategies work.
Conclusion
The six things you can do right now to lower your dementia risk aren’t complex or expensive: address hearing loss, correct vision problems, exercise regularly, eat a brain-healthy diet, control your blood pressure, and engage in structured lifestyle programs or regular social activity. The evidence shows that up to 45% of dementia is preventable, which means you have real agency here. You don’t need to overhaul your entire life overnight, and you don’t need to be perfect. The research shows that moving in these directions—even partially—reduces your risk measurably. Start this week with one thing.
Make an appointment with an optometrist or audiologist if you’ve been avoiding it. Take a 30-minute walk. Add one fish meal or extra vegetable to your plate. These feel small, but they’re the actual levers that matter. If you have risk factors you’re not addressing—hearing loss, high blood pressure, isolation—waiting doesn’t help. The brain-protective benefits of these changes compound over time, which is why now, rather than next year, matters.
