What the Brain Health Index measures
America's Brain Health Index is an effort to measure something most people only describe in vague terms: how well the country is doing at protecting cognitive health. Instead of treating brain health as a single number, it looks at the habits, nutrition, and lifestyle factors that research links to sharper thinking and healthier aging, and turns them into something you can track.
The factors that move the needle
What stands out in the data is how much everyday behavior shapes brain health at a population level. The biggest contributors are not exotic or expensive. They are the same fundamentals that show up again and again in the research literature.
When researchers compare regions and age groups, the gaps tend to track these factors closely. Areas where people eat well, stay active, and stay socially engaged show stronger results, which reinforces a hopeful idea: brain health is not fixed, and the levers are largely within reach.
What it means for you
Population data is useful because it shows what tends to work across millions of people. You can translate those findings into a personal routine without much guesswork by focusing on the factors the index weighs most heavily.
Nutrition is the factor people most often overlook, and it is one of the easiest to act on. A daily omega-3 supplement built around DHA is a simple way to support the diet-quality side of the equation, especially if you do not eat fish regularly.
The most encouraging takeaway from the index is that brain health responds to effort. The same habits that lift a national score are the ones that help any single person think more clearly and age more comfortably.
Curious where your own habits stand? Our brain health assessment can help you see which factors to focus on first.
