How Do You Treat Alzheimer's Disease?

Alzheimer's disease currently has no cure. But "no cure" does not mean "nothing can be done." Treatment can manage symptoms, preserve function and independence, support quality of life, and — for selected patients with early-stage disease — modestly slow clinical decline.

It is equally important to understand that treatment involves much more than prescribing medication. The best results come from a plan that combines the right medications with physical activity, nutrition, hearing care, sleep, social engagement, and support for family caregivers. Here is how each piece fits together.

The most commonly prescribed Alzheimer's medications are cholinesterase inhibitors — donepezil (Aricept), rivastigmine (Exelon), and galantamine (Razadyne). These medications increase the availability of acetylcholine, a neurotransmitter involved in memory and learning that becomes depleted in Alzheimer's disease.

It is important to have realistic expectations: cholinesterase inhibitors may provide modest symptomatic benefits — for example, helping memory, attention, or daily functioning — but they do not stop the underlying disease. Side effects can include nausea, stomach upset, vivid dreams, and slower heart rate, which is why dosing is individualized and monitored.

Memantine works differently: it affects NMDA receptor signaling, helping regulate the activity of glutamate, another key brain chemical. Memantine is generally used in moderate-to-severe Alzheimer's disease, and it is sometimes prescribed alongside a cholinesterase inhibitor when symptoms progress.

A newer class of treatments targets the biology of the disease itself. Lecanemab (Leqembi) and donanemab (Kisunla) are anti-amyloid medications that target amyloid pathology — the buildup of amyloid plaques in the brain. In carefully selected patients with early Alzheimer's disease, they may modestly slow clinical decline.

Several points matter:

Anti-amyloid medications do not reverse established dementia or restore lost memories. For a closer look at how these treatments work and who they may help, see What Is the New Alzheimer's Disease Treatment?, and for how amyloid and other biomarkers are detected, see New Alzheimer's Blood Tests.

Regular physical activity supports cardiovascular health, mobility, sleep, mood, and independence — all of which matter for someone living with Alzheimer's disease. Helpful options include:

General adult guidelines recommend approximately 150 minutes of moderate physical activity weekly when medically appropriate. For people living with dementia, activity goals should be individualized — adapted to fitness, safety, and the stage of the disease. Exercise has not been proven to cure or stop Alzheimer's disease, but staying active is one of the most practical ways to support daily function.

There is no specific "Alzheimer's diet," but balanced, brain-healthy eating patterns — similar to a Mediterranean-style diet rich in vegetables, fish, whole grains, and olive oil — support overall brain and cardiovascular health. Practical goals include regular, well-balanced meals, good hydration, and attention to weight changes, since appetite and taste can decline as dementia progresses. Later in the disease, meals may need to be adapted for swallowing difficulty or distraction during eating. For more on food and the brain, see brain-healthy nutrition.

Hearing loss is one of the largest modifiable factors linked to dementia risk, and in someone who already has Alzheimer's disease it adds a second barrier to communication. A hearing evaluation and properly fitted hearing aids can make conversations, activities, and social connection easier — which in turn supports cognition and mood. Family members should also be coached to speak clearly, reduce background noise, and allow extra time for responses.

Quality sleep helps the brain clear waste products and consolidates memory, so sleep problems deserve attention in any Alzheimer's treatment plan. Common issues include poor sleep quality, nighttime wandering, daytime napping that disrupts the sleep-wake cycle, and sleep apnea — a treatable condition in which breathing repeatedly stops during sleep. Evaluating and treating sleep disorders, keeping a consistent routine, and reviewing medications that affect sleep all help. Learn more in What Is Sleep Apnea?.

Isolation accelerates withdrawal and decline; social engagement protects mood and cognition. Meaningful activity — conversation, music, familiar hobbies, gentle games, faith communities, or structured cognitive stimulation programs — should match the person's current abilities rather than their past ones. Care partners need support too: education, respite, and community resources are part of treatment. Our memory and dementia resources cover these topics in depth.

Brain stimulation therapies — such as non-invasive magnetic stimulation and other neuromodulation approaches — are an active area of research in Alzheimer's disease. Evidence is still developing, and these approaches are not appropriate for everyone. If a stimulation-based therapy is being considered, it should be discussed with a specialist as part of a broader, evidence-based treatment plan rather than a replacement for it.

No single medication or lifestyle change defines Alzheimer's treatment. The right plan depends on the stage of disease, confirmation of the diagnosis, other medical conditions, medications, and the family's goals and resources. If you have recently completed an evaluation, see What Happens After a Dementia Assessment?, and if you are still sorting out what the diagnosis means, Alzheimer's vs. dementia is a good starting point. An experienced dementia specialist can coordinate medications, monitoring, and the lifestyle measures above into one plan.