In a 2026 systematic review and meta-analysis, researchers found that people with stronger handgrip strength, or those who maintained their grip strength over time, had about a 19% lower risk of cognitive decline.
Cognitive decline means a gradual worsening of memory, attention, reasoning, and processing speed. For example, a person may start having trouble remembering names or following complex instructions.
Grip strength may be a useful measure that gives information about what is happening in the body
The research shows a link between grip and cognitive abilities, but not a cause-and-effect relationship. One possible explanation is that the same aging processes affect both the brain and the muscles.
The review also examined handgrip asymmetry. Handgrip asymmetry is the difference in strength between the left and right hands. Greater asymmetry was linked to poorer cognition and faster cognitive decline. A difference of about 20% or more has been associated with cognitive decline.
Grip asymmetry is a difference in strength between the left and right hands
You can measure your grip strength at home with a small device called a handgrip dynamometer. Hold it in one hand and squeeze as hard as you can for a few seconds. Repeat the test two or three times with each hand and record your best or average result.
Track how your grip strength changes over time
There is no single number that defines a “strong” or “weak” grip for everyone. Results vary with age, sex, body size, the device used, and the testing method.
Instead of focusing on one cutoff, use the same device and the same method each time and track your own result over time. A noticeable decline may be worth discussing with a healthcare professional, especially if it appears together with other changes in physical or cognitive function.
Curious to learn more about simple but accurate tests? Assess your risk of premature death: try the Sit and Rise test. And if you would like to check your mental health, take a look at this set: Test Your Mental Health.
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Scientific Source
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Younis et al., 2026. Handgrip performance as a predictor of incident cognitive decline in older adults: A systematic review and meta-analysis. Neuroscience & Biobehavioral Reviews.
FAQs
1. What does grip strength have to do with brain health?
Research shows that stronger grip strength is associated with a lower risk of cognitive decline. This may be because some of the same aging processes affect both muscles and the brain.
2. Does weak grip strength mean I will develop cognitive problems?
No. The research shows an association, not cause and effect. Weak grip alone cannot diagnose or predict cognitive decline in an individual.
3. What is handgrip asymmetry?
It is the difference in strength between your left and right hands. Greater asymmetry, particularly differences of around 20% or more, has been associated with cognitive decline.
4. How can I measure my grip strength at home?
You can use a handgrip dynamometer. Squeeze it as hard as you can for a few seconds, repeat the test two or three times with each hand, and record your results.
5. What is considered normal grip strength?
There is no single normal value for everyone. Grip strength varies by age, sex, body size, device, and testing method. It may be more useful to track your own grip strength consistently over time and discuss substantial changes with a healthcare professional.
Summary
A 2026 systematic review and meta-analysis found that stronger or better-maintained handgrip strength was associated with about a 19% lower risk of cognitive decline in older adults. Greater differences in strength between the left and right hands were also linked to poorer cognition and faster decline. Grip strength does not directly determine brain health, but it may serve as a simple marker of age-related changes affecting both muscles and the brain. Tracking grip strength over time with a handgrip dynamometer may therefore provide useful information about changes in overall health.