The Study
An online multidomain lifestyle intervention to prevent cognitive decline in at-risk older adults: a randomized controlled trial
This study is like a fair test where half the people got special online coaching to stay mentally sharp, and the other half just got info. After three years, the coached group did better on memory and thinking tests. So we can say the coaching probably helped—not just that people who did coaching were smarter to begin with.
Analysis score
Maximum 90 for a randomized controlled trial.
Where the score came from
Scientists gave older adults at risk of memory problems a free online program that helped them exercise more, eat better, think more, and feel happier — and compared them to people who just got info.
Where does this study sit?
Reviews of RCTs (Meta-analyses)
Max 100Randomized Trials
Max 90Reviews of Cohort Studies
Max 85Cohort Studies
Max 72Reviews of Case-Control Studies
Max 63Case-Control Studies
Max 58Cross-Sectional & Case Series
Max 50Expert Opinion
Max 577 / 100
Quality score
Participants are randomly assigned to treatment or control groups, minimizing bias. The gold standard for testing whether an intervention causes an effect.
Key takeaways
Summary
Based on the study abstract and findings.
- 1Even a small improvement like 0.18 points can mean delaying memory loss by years — like staying sharper longer without drugs or surgery.
- 2People using the program had 0.18 points higher brain score after 3 years, improved memory and mood, and had lower dementia risk — all with almost no side effects.
Score breakdown, methodology, conflicts of interest, evidence analysis & raw study data
Publication
Journal
Nature Medicine
Year
2025
Authors
H. Brodaty, Tiffany Chau, Megan Heffernan, Jeewani A Ginige, Gavin Andrews, Michael Millard, Perminder S. Sachdev, K. Anstey, Nicola T. Lautenschlager, John J. McNeil, Louisa R Jorm, N. Kochan, Anthony Maeder, Heidi J Welberry, Juan Carlo San Jose, N. Briggs, Gordana Popovic, Y. Mavros, Carolina Almendrales Rangel, Y. Noble, Sue Radd-Vagenas, V. Flood, Fiona O'Leary, Amit Lampit, Courtney C. Walton, Polly Barr, Maria A Fiatarone Singh, Michael Valenzuela
Related Content
Claims (5)
A digital program combining exercise, diet, mental activities, and mental health support reduces cognitive decline over three years in adults aged 55 to 77 at risk for cognitive decline, with a measurable improvement in overall cognitive test scores compared to those who only received informational materials.
Over three years, an online program targeting multiple lifestyle factors improves attention, memory, thinking skills, physical activity, diet, and reduces depressive symptoms in older adults at risk for cognitive decline, compared to those who only receive informational materials.
At-risk older adults who complete an online multidomain lifestyle program for three years have lower estimated dementia risk scores than those who only receive informational materials.
Among at-risk older adults, an online lifestyle program delivered through digital coaching resulted in 0.60% of participants experiencing trial-related adverse events, compared to 0.03% in the control group over three years.
Intervening two decades before Alzheimer's symptoms appear prevents the disease more effectively than treating it after symptoms begin.
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.