Structured Lifestyle Program Boosts Cognitive Improvement
Multidomain Lifestyle Intervention Shows Promise in Preserving Cognitive Function in At-Risk Older Adults
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New findings from the POINTER study, presented at the CTAD conference, highlight the potential of lifestyle interventions to impact cognitive health, even in the presence of Alzheimer’s biomarkers.
FINGER Study Reinforces Benefits of Multidomain Approach
Data from the FINGER (Finnish Geriatric Intervention Study to Prevent Cognitive Impairment and Disability) trial, a landmark study involving 629 participants, has provided compelling evidence for the efficacy of a multidomain lifestyle intervention in improving or maintaining cognitive function in at-risk elderly individuals. The primary outcome, measured by the change in a complete neuropsychological test battery (NTB) z-score, demonstrated a positive effect of the intervention.
Over a two-year period, the intervention group experienced an estimated mean change of 0.20 in the NTB total z-score, compared to 0.16 in the control group. This difference, while seemingly modest, was statistically significant, with a between-group change of 0.022 per year (95% CI, 0.002-0.042; P = .030). These findings suggest that a structured program incorporating diet, exercise, cognitive training, and vascular risk monitoring can indeed make a difference in cognitive preservation.
POINTER Study Reveals Nuances in Biomarker Associations
Further insights into the impact of lifestyle interventions on cognitive health were presented at the 2024 Clinical Trials on Alzheimer’s Disease (CTAD) conference by Susan Landau, PhD, a research neuroscientist at the University of California Berkeley. Dr. Landau shared comparative MRI and PET findings from the POINTER study, alongside data from a matched Alzheimer’s Disease Neuroimaging Initiative (ADNI) cohort.
While both groups exhibited similar rates of amyloid positivity (31%), hippocampal volume, and white matter hyperintensities, a notable divergence emerged in tau pathology. Tau prediction models indicated lower tau levels in POINTER participants, particularly among those who were amyloid-positive (P < .001). Crucially, in the POINTER study, neither amyloid nor tau levels were associated with the PACC (Preclinical Alzheimer Cognitive Composite) scores. This finding contrasts with trends observed in more homogenous cohorts, such as those typically recruited from memory clinics or tertiary care centers.
Understanding the Discrepancy: Biomarkers vs. Lifestyle
In an interview with NeurologyLive®, Dr. Landau elaborated on this intriguing observation. “What we saw-which I think is the most captivating finding so far-is that in ADNI, and in many other studies that have recruited participants from memory clinic types of settings, tertiary care centers, there’s a consistent relationship where elevated tau in the brain and elevated amyloid are closely related to cognitive impairment,” she explained. “This, of course, is the basis for many of the amyloid and tau-modifying therapies that are being examined. We’ve had a lot of success recently, which is very exciting.”
The POINTER study’s findings suggest that a multidomain lifestyle intervention may offer a protective effect that can, to some extent, decouple the direct relationship between amyloid and tau accumulation and cognitive decline, at least in a general population at risk. This implies that lifestyle factors could play a significant role in modulating the clinical expression of underlying Alzheimer’s pathology.
Implications for Future Research and Clinical Practice
The convergence of evidence from FINGER and POINTER underscores the potential of a proactive, multidomain approach to cognitive health. While the development of therapies targeting amyloid and tau remains a critical area of research, these lifestyle intervention studies highlight the importance of addressing modifiable risk factors.
The divergence in biomarker associations observed in POINTER compared to ADNI also opens new avenues for research. Understanding how lifestyle interventions interact with or mitigate the effects of Alzheimer’s biomarkers is crucial for developing personalized and effective strategies for cognitive aging.
as research continues, the focus on comprehensive lifestyle interventions, alongside advancements in understanding and treating Alzheimer’s disease, offers a dual-pronged strategy for promoting brain health and improving the quality of life for aging populations.
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REFERENCES*
- U.S. POINTER STUDY SHOWS STRUCTURED LIFESTYLE PROGRAM TARGETING MULTIPLE RISK FACTORS IMPROVES COGNITION IN OLDER ADULTS AT RISK OF COGNITIVE DECLINE. News release. Alzheimer