Measure: Griffkraft

What It Predicts

PURE followed nearly 140,000 adults across 17 countries. Each 11 lb (5 kg) less grip came with about a 16% higher death rate, and a weaker grip predicted death more strongly than blood pressure did.

The pattern repeats at scale. Pooling 42 cohorts and three million people reproduced the link, in men and women alike, and it held after excluding those who were already sick. In the largest cohort, grip showed no association with diabetes, fractures, fall injuries or chest infections, so it points to no single disease. Most of this evidence is observational. A low reading partly picks out people already ill or frail, so the number tells you as much about your health now as about your future.

The Research & Studies

Everything here is based on the research we have collected and checked, sorted into groups and ordered with the strongest evidence first. Click any claim to open the studies behind it.

Progress Markers

Each 11 lb (5 kg) less grip, 16% higher death rate across 140,000 adults in 17 countriesModerate

In plain terms

In a study of nearly 140,000 people across 17 countries, every 11 lb (5 kg) drop in grip came with about a 16% higher chance of dying over the next few years, and grip forecast death better than blood pressure did.

In detail

The Prospective Urban Rural Epidemiology (PURE) study measured grip once with a Jamar dynamometer in 139,691 adults aged 35 to 70 and followed them a median of 4.0 years. Each 11 lb (5 kg) reduction was associated with all-cause mortality (HR 1.16, 95% CI 1.13 to 1.20) and cardiovascular mortality, independent of age, education, employment, physical activity, tobacco and alcohol. The authors position grip as a simple, inexpensive prognostic marker of general health, not a treatment target.

Who this may not transfer to:Unusually well balanced for this literature at 58% women, spread across 17 countries of differing income levels.

The study · 1

Leong et al., prognostic value of grip strength: findings from the PURE study · Lancet 2015;386(9990):266-273

Each 11 lb (5 kg) less grip, about 20% higher cardiovascular death across 500,000 UK adultsModerate

In plain terms

In about 500,000 UK adults, a weaker grip went with a higher chance of both developing heart disease and dying from it, in men and women alike.

In detail

UK Biobank measured grip in around 500,000 adults and followed them a mean of 7.1 years. Per 11 lb (5 kg) lower grip, all-cause mortality rose (HR 1.20 in women, 1.16 in men) and cardiovascular mortality rose (1.19 in women, 1.22 in men), alongside higher incidence of cardiovascular disease, respiratory disease and some cancers. Adding grip to an established risk model gave a small improvement in prediction, which is what a general marker of physiological reserve would be expected to do.

Who this may not transfer to:Reported separately by sex, with closely matching hazard ratios in men and women; the cohort is healthier and more affluent than the UK average, which tends to shrink observed associations.

The study · 1

Celis-Morales et al., associations of grip strength with cardiovascular, respiratory, and cancer outcomes and all-cause mortality in UK Biobank · BMJ 2018;361:k1651

Weakest third of midlife grip, about twice the disability 25 years laterModerate

In plain terms

Men with the weakest grip in midlife were roughly twice as likely to end up disabled or limited in daily tasks 25 years later, compared with the strongest men.

In detail

The Honolulu Heart Program measured grip in 3,218 healthy men aged 45 to 68 and reassessed function 25 years later. Men in the lowest third of baseline grip strength had roughly double the risk of functional limitations and disability compared with the highest third, after adjustment for age, height and the presence of chronic conditions. Strength measured in apparently healthy midlife carried forward as a signal of how well the body would hold up.

Who this may not transfer to:Measured only in Japanese-American men. Grip norms differ by sex, so the absolute cut-points do not transfer to women, though the direction of the association (weaker midlife grip, more later disability) is echoed in mixed-sex cohorts.

The study · 1

Rantanen et al., midlife hand grip strength as a predictor of old age disability · JAMA 1999;281(6):558-560

Je 11 lb (5 kg) weniger Griffkraft, 16 % höhere Gesamtmortalität, gepoolt über 3 Millionen ErwachseneModerate

In plain terms

In 42 Studien mit drei Millionen Menschen war jeweils 11 lb (5 kg) weniger Griffkraft mit einer etwa 16 % höheren Sterblichkeit verbunden, derselben Größenordnung, die die einzelne größte Kohorte fand, und der Zusammenhang hielt bei Männern und Frauen gleichermaßen und blieb bestehen, nachdem bereits erkrankte Menschen ausgeschlossen wurden.

In detail

Wu und Kollegen fassten 42 prospektive Kohortenstudien mit 3,002,203 Erwachsenen zusammen. Pro 11 lb (5 kg) geringere Griffkraft stieg die Gesamtmortalität um 16 % (HR 1.16, 95 %-KI 1.12 bis 1.20) und Herz-Kreislauf-Erkrankungen um 21 % (1.21, 1.14 bis 1.29), mit einer annähernd linearen Dosis-Wirkungs-Beziehung bis etwa 123 lb (56 kg), während Krebs keinen Zusammenhang zeigte (1.01, 0.98 bis 1.05). Die Assoziationen unterschieden sich nicht nach Geschlecht und blieben bestehen, nachdem Teilnehmer mit Herz-Kreislauf-Erkrankung oder Krebs zu Studienbeginn ausgeschlossen wurden, was die Erklärung durch umgekehrte Kausalität einschränkt, ohne sie auszuschließen, da eine nicht diagnostizierte Erkrankung die Griffkraft weiterhin senken kann.

Who this may not transfer to:Pooled from cohorts of both sexes; the meta-analysis found the association did not differ between men and women, though absolute grip values and thresholds differ by sex.

The study · 1

Wu et al., association of grip strength with risk of all-cause mortality, cardiovascular diseases, and cancer in community-dwelling populations: a meta-analysis of prospective cohort studies · J Am Med Dir Assoc 2017;18(6):551.e17-551.e35

Stronger grip, lower dementia risk across 16 pooled cohortsEmerging

In plain terms

Across a new study plus 16 earlier ones, stronger people were less likely to develop dementia or lose cognitive function over time.

In detail

A 2022 GeroScience report pooled 16 prospective cohorts, including a new KIHD cohort analysis of its own and found grip strength inversely associated with later cognitive impairment and dementia. The link is consistent in direction across cohorts, but the design is observational throughout, so it establishes a robust association rather than a causal or trainable effect on the brain.

Who this may not transfer to:The pooled cohorts include both sexes; the association holds in men and women, though absolute grip values and thresholds differ between them.

The study · 1

Kunutsor et al., grip strength and risk of cognitive outcomes: systematic review and meta-analysis · GeroScience 2022;44(4):2007-2024

Measurement And Diagnosis

The first-line test for sarcopenia, below 60 lb (27 kg) in men and 35 lb (16 kg) in womenModerate · mixed

In plain terms

The main European definition of age-related muscle loss uses grip as the first thing to check: under 60 lb (27 kg) for men or 35 lb (16 kg) for women flags probable sarcopenia.

In detail

The European Working Group on Sarcopenia in Older People, revising its 2010 definition after a review of the evidence, moved muscle strength to the front of the diagnostic pathway because strength predicts adverse outcomes better than muscle mass does. Grip strength, being cheap and reliable, is the recommended measure of strength, with thresholds of 60 lb (27 kg) (men) and 35 lb (16 kg) (women) marking probable sarcopenia pending confirmation with a mass measurement.

Who this may not transfer to:Thresholds are set separately for men and women; they are calibrated to European reference data and may need adjustment in other populations.

The study · 1

Cruz-Jentoft et al., sarcopenia: revised European consensus on definition and diagnosis (EWGSOP2) · Age Ageing 2019;48(1):16-31

How it works

Grip peaks near 112 lb (51 kg) for men and 68 lb (31 kg) for women, then falls from midlifeModerate · mixed

In plain terms

Grip is strongest in your early thirties (about 112 lb (51 kg) for men, 68 lb (31 kg) for women on average) and falls with age, so compare your number to others your age and sex, not to a single figure.

In detail

Dodds and colleagues pooled twelve British studies covering 49,964 participants from childhood to old age to build life-course centile curves for grip strength. Grip rises through youth, peaks in the early thirties, holds through the forties and declines from midlife, with men consistently stronger than women. The curves let a single reading be placed as a centile for a person's age and sex, which is the only way a raw kilogram figure carries meaning.

Who this may not transfer to:Centiles are published separately for males and females across the life course; they are derived from British samples and may sit differently in other populations.

The study · 1

Dodds et al., grip strength across the life course: normative data from twelve British studies · PLoS One 2014;9(12):e113637

Repeatable to r above 0.8 when you average three fixed-posture squeezesModerate · mixed

In plain terms

A hand dynamometer gives a repeatable number if you keep the same posture, hand and device each time, and it is usually best to average three squeezes; your dominant hand reads about 10% higher.

In detail

Mathiowetz and colleagues established the reliability and validity of grip and pinch measurement, finding high test-retest reliability for grip when a standardized seated posture (elbow at 90 degrees, forearm neutral) and the mean of three trials are used. The work underpins the American Society of Hand Therapists protocol. Because the reading is sensitive to posture, instrument and effort, comparability over time depends on holding those constant.

Who this may not transfer to:The protocol and reliability apply to both sexes; only the absolute values differ, which is why readings are always placed against sex-specific norms.

The study · 1

Mathiowetz et al., reliability and validity of grip and pinch strength evaluations · J Hand Surg Am 1984;9(2):222-226

Muscle And Strength

Training raises grip in older adults, a small but real gain (SMD about 0.28)Moderate

In plain terms

Exercise, especially resistance training, does raise your grip number in older adults by a few kilograms, so the score responds to work even though the way to move it is training the whole body.

In detail

Labott and colleagues pooled exercise trials in older adults and found a positive overall effect on handgrip strength (standardized mean difference about 0.28), driven by task-specific and multimodal training. The gains are modest in absolute terms. Grip rises when overall muscular strength rises, so the lever is whole-body resistance training, not isolated hand-squeezing work.

Who this may not transfer to:The pooled trials include men and women; the relative response to training is similar, while starting values and absolute gains differ by sex.

How to use it

Treat grip as a readout of total-body strength. Build it with the movements that build everything else, carries, deadlifts, rows and presses, and add a little dedicated grip work (heavy holds, thick-bar or towel work) only if a weak grip is limiting your other lifts. See resistance training for how to load and progress it.

The study · 1

Labott et al., effects of exercise training on handgrip strength in older adults: a meta-analytical review · Gerontology 2019;65(6):686-698

What It Is

Grip strength is how hard your hand can squeeze, measured in kilograms on a hand dynamometer. A hard squeeze needs muscle, nerves, nutrition, and general vitality in shape at once, so the number stands in for the whole body. Your dominant hand is usually about 10% stronger, so note which hand you use.

How to Measure It

Sit with your feet flat and shoulders relaxed, elbow bent to about 90 degrees, forearm and wrist neutral. Squeeze as hard as you can for a couple of seconds. Take three squeezes per hand with a short rest between, then record the best or the average of the three. Because strength varies with age and sex, judge your number against others of your age and sex.

How to Improve It

Because a strong squeeze comes from total-body strength, you raise it by building strength across the whole body. In pooled exercise trials in older adults, whole-body training is the approach with the strongest evidence. Five foundational lifts carry most of the load: squats, deadlifts, rows, presses and loaded carries. A loaded carry, walking a set distance while holding heavy dumbbells or a loaded handle, loads the grip hard while training the whole posterior chain. Dedicated grip work, such as heavy static holds, thick-bar or towel training and farmer-style holds, is a small add-on, useful mainly when a weak grip limits your other lifts.

Grip predicts these outcomes; training the grip alone does not prevent them. The 42-cohort link is with whole-body strength, not the hands.

Go Deeper

• Self-measures hub: grip alongside walking speed, the chair stand, blood pressure and the other home self-checks, each with the protocol its numbers came from.
• Resistance training: the lever for grip, and how to load and progress whole-body strength safely.
• Protein and muscle: the daily protein that lets strength training build muscle.
• Biological aging: why strength tracks the pace of aging, and the limits of reading any single marker.
• Balance and fall prevention: the other half of staying steady and independent, a separate capacity from strength.

What It Is Not

European clinicians use grip as the first-line strength check for sarcopenia. Below 60 lb (27 kg) in men and 35 lb (16 kg) in women, they call sarcopenia probable, a threshold to investigate, not a diagnosis.

Reading Grip Strength Well

Everything to be aware of is here, in one place. This practice suits most healthy people; a few situations call for real care.

No link to diabetes, fractures, fall injuries or chest infections

Grip works as a general alarm because it reads the condition of the whole body, which is also why it does not point to a specific cause. In PURE, grip predicted death and cardiovascular events but showed no significant link to incident diabetes, hospitalization for pneumonia or COPD, fall injury or fracture. A low reading is a reason to look at overall strength, activity and health, and to see a clinician about any sudden or one-sided weakness, not a diagnosis on its own.Leong et al., prognostic value of grip strength: findings from the PURE study

A low number is a signal, not a diagnosis

A hard squeeze depends on the whole body, so a low reading points to your overall strength, activity, and health. Use it to prompt action and, where warranted, a conversation with a clinician.

Local hand problems change the reading on their own

Hand or thumb osteoarthritis, a recent wrist or hand injury, carpal tunnel, tendon pain, or a rheumatoid flare can all lower grip on their own. None of these reflect whole-body strength. A one-sided drop, especially with pain, points to something local in that hand.

See a clinician for sudden weakness

A gradual change over months fits normal tracking. Sudden weakness in one hand or on one side, numbness, slurred speech, or a drooping face are stroke signs. Get urgent medical care.

Keep the test consistent, and stop if it hurts

The number is comparable over time only when the posture, hand and instrument stay the same, so a change in method can look like a change in strength. Squeeze hard, but stop short of joint pain, and if a maximal squeeze aggravates a sore wrist or thumb, ease off and track the trend with everyday tasks instead.

Start slow, be smart, read the research, and consult a professional if you have any concerns. This is here to inform your choice, not make it for you.

Common Questions

What is a good grip strength for my age?

Judge it against your age and sex, since men are stronger than women at every age. In large British data, grip peaks in the early thirties, about 112 lb (51 kg) for men and 68 lb (31 kg) for women. It holds through the forties, then declines from midlife.

Will a hand gripper or a tennis ball help?

A gripper or a squeezed tennis ball builds the grip muscles in your hands and forearms. The reserve that makes grip predict health comes from whole-body strength, and resistance training raises grip in older adults by a few kilograms while building that reserve.

What if I do not have a dynamometer?

A dynamometer gives you a number you can compare to research and track to the kilogram. The Jamar is the reference model, and a cheaper digital one still tracks your own trend even where it does not match a Jamar exactly. Without one, watch everyday tasks. A stiff jar that is suddenly hard to open, two grocery bags carried up the stairs, wringing out a towel, holding a heavy pan steady: watch for those. A clear, recent drop in any of them is worth acting on, especially when you also feel generally weaker.

Does grip strength predict dementia?

Stronger people are less likely to develop cognitive decline and dementia. Early, undiagnosed brain changes can lower activity and grip years before a diagnosis, so the evidence is observational and cannot prove cause. That signal pools 16 cohorts, including a new KIHD study, where a weaker grip tracked with aging in the brain and the body.