Large 3-Year Study Found BrainHealth Scores Improved Across Ages, Including People in Their 80s and 90s

# What the study did

# How brain health was measured The study used the BrainHealth Index, which tracks three components:

• Clarity: ability to reason through complex situations and generate solutions.
• Connectedness: social ties and sense of purpose.
• Emotional balance: capacity to handle difficult circumstances.

This index was designed to capture upward potential across those areas rather than focus solely on deficits or disease detection the way many clinical cognitive tests do.

# What participants did Daily training modules lasted five to fifteen minutes and covered attention strategies, filtering distractions, synthesizing information, and single-task focus. The program also included guidance on sleep, stress management, and physical activity. Optional virtual coaching was offered every three months. The core activities required no specialist equipment.

# Main results Overall BrainHealth Index scores rose across the full cohort during the three-year period. Specific findings reported:

• Improvements occurred at every age, including adults in their 80s and early 90s. The researchers did not identify an age at which gains reliably stopped.
• People with lower baseline scores showed the largest raw gains, partly because they had more room to improve.
• Participants with higher baseline scores continued to improve over the full three years, indicating changes were not driven only by floor effects.
• A dose-response relationship appeared: participants who engaged more consistently with the training modules recorded larger improvements.

# What this does and does not show The longitudinal, repeated-measure design strengthens the ability to observe gradual trends over time rather than relying on a single before-and-after snapshot. The correlation between frequency of engagement and improvement is consistent with the training contributing to gains, but the study cannot prove causation for two main reasons:

• Self-selected participants. People who chose to enroll were already motivated to improve brain health, which limits how broadly the findings can be generalized.

# Why the multidimensional approach matters Using a composite index that includes social and emotional dimensions expands the kinds of benefits researchers can detect. The inclusion of sleep, stress, and physical-activity guidance alongside attention exercises may help explain improvements across cognitive, emotional, and social functioning rather than only speeding up specific cognitive tests.

# Practical implications for readers Brief, regular training paired with lifestyle strategies and occasional coaching correlated with measurable improvements in this large sample. The study suggests that measurable gains in multiple areas of brain health are possible across the adult lifespan, including late life, but it does not establish that the program caused those gains. If you consider similar training, expect to see stronger associations when practice is regular and when training addresses sleep and stress as well as attention.