Frailty: What It Means and What Helps

What frailty means

Frailty is a state of vulnerability to poor recovery after a stressor event, (a stressful event). It is a consequence of cumulative decline in many body systems over a lifetime, so that minor stressors can trigger disproportionate changes in health. [1] It is related to, but different from, sarcopenia, which is specifically about muscle.

How it is described

There is no single universal definition. One widely used research definition (the Fried frailty phenotype) says frailty is present when three or more of these five are present: unintentional weight loss, self-reported exhaustion, weakness (measured by grip strength), slow walking speed and low physical activity. [2] Researchers note that confusion remains because of multiple definitions and the lack of standardized measures, and that reported frailty rates vary with the cutoffs used. [2] Clinicians may use other tools. This page cannot tell you whether you or a relative is frail. Many of these features have other causes and need professional evaluation.

Why identifying frailty helps

A Lancet review argues that better detection of frailty in routine care would help choose older people for invasive procedures or drug treatments appropriately and support a shift toward goal-directed care. [1] In plain terms, knowing about frailty can help a care team plan and talk with you about what matters most.

What the research shows about helping

Evidence labels: established recommendation, promising but limited, mixed, insufficient evidence.

1. Multicomponent exercise (strength, balance, endurance together)

   Promising; pooled studies had varied designs

   A meta-analysis of 28 randomized and quasi-experimental trials (4,857 people, age 60+) found improved frailty status, muscle strength, gait speed and balance. The authors suggested a possible protective effect. [3]

2. Resistance training in general

   Established for strength

   Cochrane review (121 trials): large positive effect on strength in older adults. [4]

3. Protein intake

   Expert position paper

   PROT-AGE position paper: older adults need more protein than younger adults to support function, with an exception for severe kidney disease. [5]

4. Reviewing medicines

   Guidance; ongoing research

   NIA says taking many medicines raises the risk of side effects and describes deprescribing as an approach being studied. [6]

NIA adds that being underweight raises the chance of medical problems such as osteoporosis and anemia and can make recovery from illness or infection harder. [7] See appetite changes and unintended weight loss.

Everyday supports

• Move in ways that are safe for you. NHS advises speaking to a GP first if you have medical conditions. [8] See strength training and protein for older adults.
• Prevent falls. NIA lists exercise, vision checks and a safer home. [9] See falls and balance problems.
• Vitamin D for people who are rarely outdoors. UK government advice cited by the NHS suggests a daily vitamin D supplement all year for adults who are not often outdoors, for example if they are frail or housebound. [10] Ask your own clinician; amounts in other countries differ.
• Stay connected. See social connection and loneliness.