Try These 3 Changes to Stay Sharp as You Age, Study Suggests

A Groundbreaking Study on Brain Health and Lifestyle Interventions

A groundbreaking study has made significant strides in understanding how lifestyle changes can impact brain health as people age. Known as the U.S. POINTER study, it stands as the largest randomized clinical trial in the United States to explore whether lifestyle interventions can help improve cognitive function over time.

The study, led by the Alzheimer’s Association and UC Davis Health, recently published its findings, revealing promising results that could reshape how we approach brain health. Researchers discovered that three key lifestyle interventions—improved diet, regular exercise, and socialization—can significantly enhance brain function in older adults at risk for cognitive decline and dementia.

Participants and Their Experiences

The study involved 2,100 participants aged 60 to 79 who were sedentary and at risk for dementia due to conditions such as prediabetes and high blood pressure. Half of these individuals took part in a structured program with 38 team meetings over two years, while the other half attended only six meetings and managed their own lifestyle changes.

During the structured sessions, trained facilitators provided guidance on exercise, nutrition, and cognitive activities. Participants also tracked their vital signs and underwent regular physical and cognitive exams every six months. The self-guided group was encouraged to make their own lifestyle adjustments based on their schedules.

The results showed that those in the structured program experienced a delay in normal cognitive aging by one to two years compared to the self-guided group. However, both groups saw improvements in cognitive scores over time.

Dietary Changes for Brain Health

One of the key components of the study was the MIND diet, which combines elements of the Mediterranean and DASH diets. This approach focuses on foods that support brain health, such as berries, leafy vegetables, and extra-virgin olive oil, while limiting fried foods, processed meats, and sugary sweets.

Participants received detailed guidance on what to eat and what to avoid. For instance, they were given a refrigerator chart outlining healthy and unhealthy options. One participant, Phyllis Jones, shared her experience: “We had to eat berries and vegetables most days, including green leafy veggies, which was a separate item. We had to have 2 tablespoons of extra-virgin olive oil once every day.”

Exercise and Physical Activity

In addition to dietary changes, the study emphasized the importance of regular physical activity. Participants were encouraged to engage in aerobic, resistance, and stretching exercises. They were given YMCA memberships and taught how to use gym equipment effectively.

The goal was to achieve 30 minutes of moderate-intensity aerobic activity daily, along with strength training and stretching several times a week. Fitness trackers were used to monitor progress. Jones described her initial struggle: “After that first 10 minutes, I was sweating and exhausted. But we went slow, adding 10 minutes at a time, and we kept each other honest. Now I just love to work out.”

Socialization and Cognitive Engagement

Social interaction played a crucial role in the study. Participants engaged in cognitive challenges through the BrainHQ app and participated in various intellectual and social activities. These interactions not only supported cognitive function but also fostered meaningful relationships among participants.

Jones found a close friend during the program, Patty Kelly. “At 81, she’s older than me, but we do all sorts of things together,” Jones said. “Isolation is horrible for your brain. But once you get to a point where you are moving and eating healthy, your energy level changes, and I think you automatically become more social.”

Key Findings and Implications

The study found that lifestyle changes led to significant improvements in cognitive functioning, particularly in executive functions like planning and organizing. While memory scores did not show marked improvement, the results suggest that vascular changes in the brain may have a greater impact on everyday functioning.

Rachel Whitmer, co-director of the UC Davis Alzheimer’s Disease Research Center, highlighted the importance of the study: “U.S. POINTER is important because it was designed as a rigorous, randomized controlled clinical trial to demonstrate whether an accessible and sustainable lifestyle intervention protects cognitive function in diverse populations across the United States.”

Future Directions and Recommendations

Researchers emphasize the need to implement these interventions in a way that is accessible to those who need them most. Jessica Langbaum of the Banner Alzheimer’s Institute suggested that doctors should treat lifestyle interventions like medication. She noted that insurance companies could potentially cover such programs, making them more widely available.

More data from the study, including brain scans and blood tests, will provide further insights into the long-term effects of these lifestyle changes. As Baker stated, “These are the initial results. Over the coming weeks and months, study leadership will be exploring all of the data collected in the trial to paint an even more comprehensive picture of the U.S. POINTER intervention effects on brain health.”

In the meantime, Langbaum encourages individuals to adopt thoughtful lifestyle changes. “If you already do the Sunday crossword puzzle and it's not challenging, pick up something new, find that exercise regimen that you'll adhere to, and if you can do it around people, that's even better.”