Cognitive health — how well we think, remember, and make decisions — is something many of us want to preserve as we age. With dementia and Alzheimer’s disease on the rise worldwide, researchers are asking: Can lifestyle choices help protect our brains?
A major U.S. clinical trial, the POINTER Study (Protect through a Lifestyle Intervention to Reduce Risk), is providing new answers.
What Is the U.S. POINTER Study?
The U.S. POINTER Study is a large, ongoing clinical trial designed to test whether lifestyle changes can slow down cognitive decline in older adults who are at increased risk of memory loss.
It is modelled on the FINGER study from Finland, which was the first large randomised controlled trial to show that combining multiple lifestyle changes (diet, physical activity, cognitive training, and social support) could help maintain brain function in older people at risk of dementia (Ngandu et al., Lancet, 2015).
What Does the Research Show So Far?
While the full results of the U.S. POINTER Study are still being collected, early findings from similar studies (including FINGER and European trials) highlight five key areas that support brain health and healthy ageing:
- Nutrition Matters
- Diets rich in fruit, vegetables, wholegrains, fish, legumes, and unsaturated fats (like the Mediterranean or MIND diet) are linked with better cognitive outcomes.
- Limiting processed foods, added sugars, and saturated fats may lower dementia risk.
- Physical Activity
- Regular aerobic exercise (walking, cycling, swimming) improves blood flow to the brain and supports memory and executive function.
- Resistance training can also help maintain both muscle and cognitive health.
- Cognitive Training
- Challenging the brain with puzzles, learning new skills, or memory exercises may slow decline.
- Lifelong learning and mental stimulation are protective.
- Social Engagement
- Staying connected reduces stress, depression, and isolation — all of which are linked with poorer cognitive health.
- Group activities, volunteering, and community engagement are beneficial.
- Managing Vascular Risk Factors
- Conditions like high blood pressure, high cholesterol, obesity, and type 2 diabetes increase dementia risk.
- Addressing these through lifestyle change and medical care is essential.
Why This Matters in Ireland
In Ireland, dementia affects over 64,000 people, and this number is projected to more than double by 2045 (Alzheimer Society of Ireland). Research like the POINTER Study shows us that prevention and risk reduction are possible — and that small daily changes add up.
Practical Tips to Protect Your Brain
As a Galway-based CORU Registered Dietitian, Clinical Nutritionist and Trained Psychotherapist, I integrate the learning from psychotherapy in my day-to-day work with clients to help improve outcomes. This unique combination allows me to understand the psychological aspects of behaviour change and provide clients with a well-rounded approach.
Here are some practical, evidence-based steps you can take:
- Aim for at least 150 minutes of moderate physical activity per week
- Follow a Mediterranean-style diet with fish twice weekly, daily fruit and vegetables, wholegrains, and olive oil
- Stay mentally active — read, learn, or try new hobbies
- Prioritise good sleep and stress management
- Keep socially connected — with family, friends, and your community
Key Takeaway
The U.S. POINTER Study reinforces what earlier research (like the FINGER trial) has shown: a combination of healthy lifestyle choices can help protect the brain and support healthy ageing.
While no single food, supplement, or habit prevents dementia on its own, the power lies in combining multiple changes consistently.
Next Steps
If you are interested in protecting your brain health, supporting memory, and building long-term lifestyle habits, GNTC.ie can help with personalised, evidence-based nutrition and lifestyle advice.
