ConditionWhole body & general
Frailty Syndrome
Frailty syndrome is a state of reduced physical strength, energy and resilience, usually in older adults, that makes a person more vulnerable to falls, hospital stays, disability and complications from even minor illness. It is identified by signs such as unintended weight loss, exhaustion, weakness, slow walking and low activity. Frailty is not an inevitable part of aging: about 1 in 10 adults over 65 is frail, and strength exercise, good nutrition and a medicine review can prevent or partly reverse it.
Also called: Frailty, physical frailty, frail elderly syndrome, geriatric frailty
At a glance
- What it is
- Loss of physical reserve that makes small stresses cause big health setbacks.
- How common
- About 1 in 10 adults over 65, rising to a quarter or more over 85.
- Five key signs
- Weight loss, exhaustion, weak grip, slow walking, low physical activity.
- Consequences
- Falls, fractures, disability, hospital admission, delirium, loss of independence.
- Assessment
- Simple screening tools, walking speed, grip strength, and a comprehensive geriatric assessment.
- Treatment
- Strength and balance exercise, protein-rich nutrition, medicine review, treating underlying conditions.
When to get help
Call 911 or go to the ER
- A fall with a head injury, inability to get up, severe hip or back pain, or a leg that looks shortened or turned out: call 911 or your local emergency number
- Sudden confusion, drowsiness or inability to stand in an older adult (possible delirium, infection or stroke)
See a doctor within a day or two
- Rapid decline over days in walking, eating or alertness
- Not eating or drinking for more than a day, or signs of dehydration
- A fall in someone taking blood thinners, even without obvious injury
Book a routine appointment
- Unintended weight loss of about 4.5 kg (10 lb) or 5 percent of body weight in a year
- Slower walking, needing to hold furniture, or difficulty rising from a chair
- Feeling exhausted most days, or giving up usual activities
- Two or more falls in a year, or fear of falling
- Taking five or more regular medicines
What frailty means
Frailty reflects a decline across several body systems: muscles, bones, the immune system, hormones, nutrition and the brain. A fit older adult who catches flu may feel unwell for a week; a frail older adult may develop confusion, fall, lose the ability to walk and never fully regain independence. This loss of "reserve" is the core of frailty.
Frailty is related to, but different from:
- Disability: difficulty with daily tasks. Frailty often comes first and predicts disability.
- Multiple chronic illnesses: common in frail people, but some people with many conditions are not frail.
- Sarcopenia: loss of muscle mass and strength, a key component of physical frailty.
Signs of frailty
The widely used Fried frailty phenotype counts five features:
| Sign | How it is measured |
|---|---|
| Unintended weight loss | 4.5 kg (10 lb) or more, or 5 percent, in the past year |
| Exhaustion | Feeling that everything is an effort most days |
| Weakness | Low grip strength for age, sex and size |
| Slow walking | Taking longer than expected to walk 4.5 m (15 ft) |
| Low physical activity | Little weekly activity or energy use |
Three or more signs indicate frailty; one or two indicate "pre-frailty", which is a good time to intervene.
Other clues include falls, new incontinence, confusion during illness, and needing more help at home.
Causes and risk factors
- Age-related muscle loss and inactivity
- Poor nutrition, especially low protein, and weight loss (malnutrition)
- Chronic diseases: heart failure, COPD, diabetes, kidney disease, arthritis, cancer, depression and dementia
- Polypharmacy: many medicines, especially sedatives and those that lower blood pressure
- Low vitamin D and hormonal changes
- Social factors: isolation, loneliness, poverty and limited access to care
- Hospital stays, which can cause rapid muscle loss
Assessment
Frailty can be identified quickly in primary care or hospital:
- Clinical Frailty Scale: a 9-point scale from very fit (1) to terminally ill (9), based on activity and independence. A score of 5 or more indicates frailty.
- Gait speed: walking slower than about 0.8 m per second suggests frailty.
- Timed Up and Go test: standing from a chair, walking 3 m, turning and sitting back down; taking more than about 12 seconds suggests increased fall risk.
- Grip strength with a handheld dynamometer.
- Questionnaires such as the FRAIL scale.
People identified as frail benefit from a comprehensive geriatric assessment: a multidisciplinary review of physical health, medicines, mobility, nutrition, mood, cognition, continence, home environment and social support, leading to a personal care plan.
Treatment and prevention
Exercise
The most effective treatment. Programs combining resistance (strength) training, balance work and walking improve strength, speed and independence even in people over 90. Aim for:
- strength exercises for major muscle groups at least 2 days a week
- balance activities, such as tai chi, at least 2 to 3 days a week
- regular walking or other aerobic activity
A physical therapist can design a safe, progressive program.
Nutrition
- Eat enough calories and spread protein across meals; many experts suggest about 1.0 to 1.2 g of protein per kg of body weight a day for older adults, unless kidney disease limits this.
- Use oral nutritional supplements when appetite is poor.
- Check vitamin D and correct deficiency.
- Address dental problems, swallowing difficulties and low mood that reduce eating.
Medicine review
Reducing unnecessary medicines, especially sedatives, anticholinergics and those causing dizziness, lowers fall risk and can improve energy and alertness.
Treating underlying conditions
Optimize heart failure, COPD, diabetes, anemia, thyroid problems, depression and pain. Treat hearing and vision loss.
Fall prevention
Home safety checks, good lighting, removing trip hazards, grab rails, suitable footwear, and treatment of osteoporosis to prevent fractures.
Social support
Staying socially connected, community programs and caregiver support all help maintain function.
Planning ahead
Frailty is a useful signal to discuss what matters most to the person, including goals of care, preferences for hospital treatment and advance care planning, so that care matches their wishes.
Frequently asked questions
What are the signs of frailty?
Key signs are unintended weight loss, feeling exhausted, weak grip, slow walking and low physical activity. Others include frequent falls, difficulty getting up from a chair, needing more help at home, and becoming confused or very unwell with minor illnesses.
Can frailty be reversed?
Yes, partly, especially in the early or pre-frail stage. Regular strength and balance exercise, better nutrition with enough protein, reviewing medicines and treating underlying conditions can improve strength, walking speed and independence, even in very old age.
What is the Clinical Frailty Scale?
It is a 9-point scale that rates a person's overall fitness and independence, from 1 (very fit) to 9 (terminally ill). Scores of 5 and above indicate increasing frailty. Doctors use it to guide decisions about treatment, rehabilitation and care planning.
Is frailty a normal part of aging?
No. Frailty becomes more common with age, but many people remain robust into their 80s and 90s. Inactivity, poor nutrition, chronic disease and multiple medicines all contribute, and many of these can be changed to prevent or delay frailty.
Sources
This guide was written from current patient and clinical guidance, including:
- American Geriatrics Society: Frailty position statements and resources
- National Institute on Aging: Exercise and physical activity for older adults
- World Health Organization: Integrated care for older people (ICOPE) guidance
- British Geriatrics Society: Fit for Frailty guidance
- CDC: STEADI, Stopping Elderly Accidents, Deaths and Injuries