Lifestyle as Medicine: Why Proven, Affordable Ways to Prevent Dementia and Heart Disease Remain Out of Reach

A pair of hearing aids cuts dementia risk by nearly a quarter in epilepsy patients. Two hours a week of strength training slashes heart attack risk in women by nearly half. A shingles vaccine prevents a meaningful share of dementia cases. The United States spends $5.3 trillion annually on chronic disease, yet the interventions proven to prevent it—cheap, accessible, backed by solid science—remain out of reach for most families. Medicare won't cover the hearing aids. No insurer pays for your gym membership. Your doctor has limited time and no reimbursement to discuss the anti-inflammatory diet that could save your brain. Nine of every ten healthcare dollars go to people with chronic and mental health conditions. Between now and 2039, chronic disease will cost this country $47 trillion in medical bills and lost wages. Six in ten Americans—194 million adults—already live with at least one chronic disease.

Yet insurers and health systems still treat these interventions as optional—consumer purchases you can take or leave, not the medical infrastructure they've proven to be. Families pay out of pocket or watch the people they love slide into preventable illness. A healthcare industry built to treat expensive chronic disease has no reason to invest in prevention that actually works.

Strength Training Slashes Heart Risk in Women—If They Can Access It

Women who strength-train for at least two hours each week have 20% lower risk of major cardiovascular disease and 44% lower risk of heart attack than women who skip resistance work entirely. That finding comes from a June 2026 study in the Journal of the American College of Cardiology. Researchers tracked more than 117,000 women for nearly fifteen years using data from the Nurses' Health Study. Women who combined two hours of strength training with 150 minutes of aerobic activity each week saw their heart attack risk drop 45% compared to inactive women. Every additional hour of resistance training per week brought a 14% lower heart attack risk and 5% lower heart disease risk.

Dr. Tianyue Zhang from Harvard T.H. Chan School of Public Health led the work. Despite its established health benefits, she noted, resistance training is often overlooked as a prevention strategy for cardiovascular disease. Its impact on heart risk—especially in middle-aged and older women—remains understudied.

"Overlooked" is polite. Here's another frame: nobody profits when a middle-aged woman prevents a heart attack with free weights in her basement instead of needing stents, medications, and cardiology appointments for life.

A Shingles Vaccine That Protects the Brain

Older adults who got at least one dose of the Shingrix shingles vaccine had 24% lower risk of dementia over four years compared to unvaccinated peers in skilled nursing facilities. The finding comes from a Brown University study published in Annals of Internal Medicine. Researchers analyzed health records and Medicare data from more than 500,000 adults aged 66 and older.

Among vaccinated adults, 18.8% developed dementia within four years. Among the unvaccinated, 24.6% did. The researchers estimate one in seventeen dementia cases could be prevented by the shingles vaccine.

A separate Stanford-led study of a vaccination program in Wales found a 20% reduction in new dementia diagnoses over seven years. The protective effect appeared even in people already diagnosed with dementia, suggesting the vaccine may have therapeutic potential.

Pascal Geldsetzer, a Stanford assistant professor of medicine who led the Wales study, said the protective signal was striking. It appeared regardless of how the team analyzed the data.

Yet public health agencies and physicians rarely frame shingles vaccination as dementia prevention. Patients have no idea they're turning down what may be an accessible neuroprotective tool.

Hearing Aids Cut Dementia Risk—for Patients Who Can Afford Them

Adults with both epilepsy and hearing loss who use hearing aids have 23% lower risk of developing dementia over five years compared to similar patients who go without. The research was presented at the 2026 European Academy of Neurology Congress. Hearing aid use in this population yielded an absolute risk reduction of 2.7 percentage points—one dementia case prevented for every 37 patients fitted with hearing aids.

The benefit was specific to epilepsy. Broader groups with hearing loss alone or with other conditions showed no significant dementia risk reduction.

Dr. Carolina Ferreira-Atuesta led the study. What surprised her team most, she said, was how specific the finding was. Most other higher-risk groups showed no significant association. In epilepsy the association was consistent across every analysis.

Yet neurologists rarely screen for hearing loss or prescribe hearing aids as part of epilepsy care. Medicare won't cover hearing aids. Even patients who know they need them often can't pay.

Anti-Inflammatory Diets Reshape Dementia Risk

In a large UK Biobank study of 84,342 older adults, participants with cardiometabolic diseases who followed an anti-inflammatory diet had 31% lower dementia risk than those on a pro-inflammatory diet.

For people with elevated Alzheimer's biomarkers, an anti-inflammatory diet cut dementia risk by 21% to 29%. The Mediterranean diet only protected brain health in those with lower baseline biomarker levels.

Higher scores on the Dietary Inflammatory Index—meaning more inflammatory foods—brought a 21% increase in dementia risk per additional unit. People in the highest tertile were three times more likely to develop dementia than those in the lowest.

The anti-inflammatory diet was linked to larger gray matter volume and lower burden of white matter damage on brain MRI scans.

Yet primary care doctors get no reimbursement for nutrition counseling and lack training to prescribe specific dietary interventions. Patients navigate conflicting wellness advice alone.

How These Interventions Actually Work

These tools attack root causes—inflammation, sensory deprivation, muscle loss—that drive dementia and cardiovascular disease, rather than treating symptoms after the fact.

Researchers think preventing shingles may reduce neuroinflammation, slowing dementia progression in people with underlying brain pathology. Kaley Hayes, an assistant professor at Brown University's School of Public Health, put it plainly: Our cognition is so tied to our overall health and what happens to us physically. It's really amazing to see that something supposed to prevent a physical ailment can also help keep our brain healthy.

Dr. Ferreira-Atuesta explained the epilepsy finding this way: Most people with hearing loss have enough cognitive reserve to absorb the extra effort caused by hearing impairment. Correcting it may not have a large effect on dementia risk. Epilepsy is different. Cognitive reserve is often already reduced. Removing one additional source of strain may have a greater impact.

Strength training's cardiovascular benefits may come from resistance exercise improving metabolic health, reducing inflammation, and supporting vascular function in ways aerobic activity doesn't. Dr. Zhang noted the findings suggest that within an already active population, resistance training delivers additional reductions in cardiovascular disease risk above and beyond overall aerobic activity.

UK Biobank researchers highlighted an anti-inflammatory diet as a modifiable factor that may support brain and cognitive health among people with cardiometabolic diseases.

What makes these interventions threatening to the status quo is exactly what makes them valuable to patients: they work upstream, before the chronic disease industry can monetize your decline. A healthcare system designed around procedural billing and pharmaceutical sales has no financial architecture to reward the doctor who keeps you out of the hospital or the insurer who invests in your gym membership today to avoid your heart surgery tomorrow.

The Economic Case That's Being Ignored

Alzheimer's and dementias cost $360 billion in 2024. That figure will hit nearly $1 trillion by 2050. Cardiovascular disease is projected to cost roughly $2 trillion by 2050, with annual costs averaging $407.3 billion in 2018–2019.

Better prevention, earlier intervention, and improved management could prevent 150 million new chronic disease cases, save 13.5 million lives, and avoid $7 trillion in costs between 2024 and 2039.

Proven prevention investments return $5.60 to over $13 for every dollar spent. A $10 per person per year community investment in prevention could save more than $16 billion in healthcare costs over five years.

Pascal Geldsetzer described the shingles vaccine as potentially an inexpensive, safe, and scalable dementia intervention, which would have huge public-health implications.

Those savings go to patients and taxpayers, not to the hospitals, pharmaceutical companies, and medical device manufacturers who profit from treating preventable disease.

The Affordability Crisis Blocking Access

Hearing aids cost $2,500 to $4,700 per pair on average. A single pair of prescription hearing aids can run more than $4,500—unaffordable for most retirees on fixed incomes. Original Medicare Parts A and B don't cover hearing aids, hearing exams, or fittings. Most private plans exclude them too.

For 77% of Americans with functional hearing loss, hearing aid costs over $2,500 count as catastrophic healthcare expenses. An estimated 4% are pushed into poverty trying to afford them. Fewer than 20% of American adults with hearing loss currently use hearing aids.

Dr. Liza Creel, a University of Colorado researcher, said it clearly: We know we have structural barriers to access hearing health care driven by health insurance plans and geographic factors. People shouldn't have to move to get access to care. The cost of care should not prevent people from being able to access the support they need.

The FDA's 2022 rule allowing over-the-counter hearing aid sales is expected to save consumers about $1,400 per individual hearing aid—over $2,800 per pair. But significant affordability gaps remain.

Gym memberships, personal trainers, and strength-training programs stay out-of-pocket expenses for most Americans despite proven cardiovascular benefits. Primary care visits are too brief for meaningful lifestyle coaching, and most physicians aren't trained or reimbursed to prescribe exercise, nutrition counseling, or hearing screenings as first-line interventions.

These are policy choices, not inevitabilities. When people go without hearing aids, their cognitive decline accelerates. They eventually need far more expensive dementia care that Medicare does cover. The question is who benefits from this arrangement.

What the System Should Do

Medicare should expand coverage to include hearing aids, hearing exams, and fittings. Hearing loss is a modifiable dementia risk factor. The intervention works.

Health systems should integrate routine hearing assessment and cognitive screening into epilepsy care and other high-risk populations, as researchers now call for.

Medicare and insurers should cover strength-training programs or gym memberships as preventive services.

Public health agencies should prioritize shingles vaccine outreach to high-risk and underserved older adults, framing it not just as shingles prevention but as dementia prevention.

Primary care practices need redesign—longer visits, reimbursement for lifestyle counseling, training for physicians to prescribe diet, exercise, and sensory interventions as first-line treatments.

Dr. Harlan Krumholz, editor-in-chief of JACC, said the strength training study provides strong evidence to reinforce that resistance training should be included in a well-rounded health routine to support function and longevity.

Kaley Hayes noted the shingles vaccine fits into a large puzzle that's just starting to come together—that vaccines are effective at preventing shingles and also appear to have neuroprotective benefits as well.

These recommendations have sat on researchers' desks for years. What's missing isn't evidence. It's political will—and a healthcare lobby that profits from the status quo.

What You Can Do Now

Women should aim for at least two hours of strength training per week, ideally combined with 150 minutes of aerobic activity. Strength training doesn't require expensive equipment. Bodyweight exercises, resistance bands, and free weights at home work.

Adults over 50 should ask their doctor about the Shingrix shingles vaccine. It's FDA-approved and may offer dementia prevention benefits on top of preventing shingles.

If you or a family member has hearing loss, explore over-the-counter hearing aids the FDA approved in 2022. They can save over $2,800 per pair compared to prescription devices. People with epilepsy and hearing loss should discuss hearing aid use with their neurologist—this population shows a specific 23% dementia risk reduction.

Adopt an anti-inflammatory diet—whole foods, vegetables, fruits, whole grains, healthy fats—and reduce processed foods, refined sugars, and inflammatory oils. For people with cardiometabolic diseases or elevated Alzheimer's biomarkers, an anti-inflammatory diet shows particularly strong dementia risk reductions of 21% to 31%.

Advocate for policy changes. Contact your representatives. Demand Medicare coverage for hearing aids, strength-training programs, and preventive lifestyle interventions. Emphasize the $7 trillion in potential savings.

The science is in. The interventions work. Prevention investments return over $13 for every dollar spent. What remains is a test of whether American healthcare will serve the families paying for it or the industries profiting from their illness. You can adopt these habits today. You can call your representatives tomorrow. But the hardest question isn't what works to prevent dementia and heart disease—we know that now. The hardest question is why you're still fighting alone for access to it.