# Nutrition and Alzheimer
Protective nutrients
Research is investigating which nutrients may possibly reduce the risk of Alzheimer's.
ResearchediPositive results in clinical studies, not yet standard treatment
is the role of omega-3 fatty acids, particularly docosahexaenoic acid (DHA), which is found in fatty fish. In animal studies, DHA has been shown to improve cognitive function and reduce cell damage. Also
ResearchediPositive results in clinical studies, not yet standard treatment
is selenium, a trace element found mainly in nuts, seeds and fish. Research suggests that selenium may offer protection against certain harmful substances.
Vitamins from vegetables, fruit and whole grains are also
ResearchediPositive results in clinical studies, not yet standard treatment
For their potential role. This is mainly about B vitamins and antioxidants. This aligns with the broader pattern that a diet high in plant-based foods shows associations with better brain health at population level.
Amino acids and protein pattern
Recent research
ResearchediPositive results in clinical studies, not yet standard treatment
the role of specific amino acids, such as valine, in relation to genetic risk factors for Alzheimer's. This suggests that the pattern of protein intake may influence brain risk in certain people. It is still too early to derive personal advice from this, but it suggests that not only the quantity, but also the composition of protein sources may be relevant.
Carbohydrates and cerebral blood flow
The relationship between carbohydrate intake and dementia risk is
ResearchediPositive results in clinical studies, not yet standard treatment
. Studies show that how blood sugar and insulin are balanced can influence blood flow to the brain and blood vessel structure. Prolonged prediabetic state (precursors to diabetes) is associated with changes in brain structure. This does not mean that certain diets are "better" or "worse", but rather that the importance of stable glucose metabolism is being recognised.
Liver health and nutrition
Because the liver and intestines process nutrition, the
ResearchediPositive results in clinical studies, not yet standard treatment
How dietary patterns influence liver health, and how this in turn may be linked to neurodegeneration. This is still research territory and direct links have not been established.
Gut microbiota
The bacteria in your gut play a role in how nutrients are absorbed and in immune response.
ResearchediPositive results in clinical studies, not yet standard treatment
is how nutrition affects these gut bacterial communities, and whether this could indirectly change brain health risks. This field is still in its infancy, but is an area of focus in research into neurodegenerative diseases.
Nutrition and medication use
With Alzheimer's, medicines are prescribed that affect your brain activity. Certain nutrients and supplements can
ResearchediPositive results in clinical studies, not yet standard treatment
Influence how medicines work. This is person- and medicine-specific. Therefore, always discuss your dietary choices and supplements with your pharmacist or doctor, especially if you are already taking medication.
What does not work or is not recommended
Advised againstiProven ineffective or harmful, or dangerous in combination with your treatment
is self-diagnosis by adjusting your diet. Alzheimer's is a medical condition that requires specialist care. Nutrition can be part of your overall health, but does not replace treatment.
Also
Advised againstiProven ineffective or harmful, or dangerous in combination with your treatment
is following unproven "miracle diets" promoted on the internet against dementia. This can be costly, confusing and harmful, especially if it means you miss out on real medical care.
Practical considerations
For many people with Alzheimer's, eating itself becomes more difficult as the disease progresses: chewing, swallowing and recognising hunger sensations can change. In later stages
ResearchediPositive results in clinical studies, not yet standard treatment
is how nutritional support (specially designed nutritional products, adapted texture) and environmental modifications help to ensure adequate calorie and nutrient intake.
In earlier stages, it may be more practical to work with a dietitian to determine which dietary patterns support your personal health priorities — for example, stable blood sugar levels, heart health or weight management. This varies from person to person.
Questions for your healthcare provider
Ask your doctor or dietitian:
- Whether there are nutrients or supplements that are specifically relevant to your situation
- How to best take your medication in relation to meals
- Whether your dietary pattern is compatible with any other diseases you have (diabetes, heart disease, kidney problems)
_This information never replaces a doctor's judgment. Always discuss your situation with your own healthcare provider._