Losing strength as you get older is common, but it isn’t something you simply have to accept.
The medical term for age-related muscle loss is sarcopenia, and there’s a short, validated way to check whether it’s likely affecting you.
It’s called the SARC-F.
It’s five questions, it takes about a minute, and it’s the screening tool recommended by the European Working Group on Sarcopenia in Older People.
Answer the questions below and this tool will add up your score and tell you what it means. Nothing you enter is saved or sent anywhere – the math happens on your own device.
SARC-F Sarcopenia Screening Tool
Five questions, about one minute. Nothing you enter is saved or sent anywhere — the calculation happens on your own device.
SARC-F developed by Malmstrom & Morley, JAMDA 2013. This is an educational screening tool, not a diagnosis. A score under 4 does not rule sarcopenia out.
What the SARC-F Actually Measures
Notice that none of the five questions ask about your weight or how your arms look.
That’s deliberate.
Since 2018, low muscle strength rather than muscle size has been the primary criterion for sarcopenia, because strength is what predicts whether you can get out of a chair, climb your stairs, or catch yourself when you stumble.
It also means you can be overweight and still be sarcopenic – the scale won’t tell you.
What It Can’t Tell You
Two honest limitations.
This isn’t a diagnosis. It’s a screen. A high score means the questionnaire flagged something worth investigating, not that you have a confirmed condition.
A low score isn’t a clean bill of health. The SARC-F is much better at correctly identifying people who don’t have sarcopenia than at catching everyone who does. If your strength has changed noticeably in the last year, take that seriously even if you scored a 2.
What to Do With Your Result
If you scored 4 or higher, bring it to your doctor. Ask specifically about a grip strength measurement, which takes about thirty seconds with a hand dynamometer and gives you an objective number to track. Any physical therapist has one.
If you scored under 4, the useful move is to screen again in a year rather than to forget about it. Muscle loss is gradual, and the change is easier to spot against an earlier score than in the mirror.
Either way, the treatment is the same and it’s worth starting before you’re flagged. Progressive resistance training two to three times a week, and enough protein to support it, are the two interventions with real evidence behind them.
I’ve written the full picture in our guide to sarcopenia and age-related muscle loss – what’s happening in your muscles, how much protein you actually need, and where to start if you’ve never lifted a weight in your life.
The SARC-F was developed by Malmstrom and Morley (JAMDA, 2013). This tool is educational and is not a substitute for medical advice or a clinical diagnosis. Talk to your doctor before starting a new exercise program.