Small illnesses can hit much harder when someone is living with frailty (Image: Humphrey Nemar/Getty)
As an NHS GP, I regularly see just how differently people experience ageing. Two patients may both be 80, but their day-to-day lives can look worlds apart. One may still be travelling, tending the garden and heading out for long walks, while another may find stairs, shopping or everyday errands increasingly difficult. A short-lived illness that one person recovers from within days can leave someone else facing weeks of setbacks. A major reason for that gap is frailty.
What is frailty?
Medically, frailty describes a state in which the body has less reserve and resilience. In practical terms, it means even relatively minor health problems can cause a far bigger decline than they once would have done.
For example, one person may bounce back quickly after a mild respiratory infection. But for someone living with frailty, the same illness can trigger confusion, reduced mobility, a fall or even the need for a hospital admission. Recovery can take much longer, and in some cases people do not return to the level of independence or physical ability they had before they became unwell.
Frailty tends to build slowly over many years. It is linked to changes across the body, including declining muscle strength, lower bone density and a reduced ability of the heart, lungs and other organs to cope with physical stress.
While frailty becomes more common with advancing age, it is not an unavoidable part of getting older. Many people remain active, capable and independent well into later life.
That is why recognising frailty — and understanding how it may be prevented, slowed or managed — is so important for healthier ageing.
Why does frailty develop?
In most cases, frailty develops because several factors combine over time. Ageing itself can bring a gradual loss of muscle mass and strength, while long-term conditions such as diabetes, heart disease and arthritis may speed up that decline.
Poor nutrition, physical inactivity and smoking also increase the risk, along with social factors. Loneliness and isolation may lead people to become less physically active, eat less well and lose confidence in socialising. Over time, these changes can contribute to a gradual decline in health and independence.
Although frailty is most common in older age, it also affects younger adults. People with multiple long-term conditions, severe disabilities, or illnesses that reduce muscle strength and physical resilience may develop frailty when young.
How do doctors identify frailty?
General practitioners routinely look for signs of frailty in older patients. Increasingly, NHS computer systems use information already in medical records to help identify people who may be living with mild, moderate or severe frailty and who may benefit from additional support.
But no computer score tells the whole story. Frailty is best identified through a combination of medical information and clinical judgement. Doctors will consider how well someone manages everyday activities, their mobility, memory, nutrition and overall health.
Can frailty be prevented?
The good news is that frailty can be delayed or slowed. Regular physical activity is the single most effective measure. In particular, exercises that build muscle strength and improve balance help people maintain mobility and independence.
Walking is excellent for overall health but activities such as resistance training or climbing stairs also improve strength and reduce the risk of falls.
Eating a healthy, balanced diet is also important. Older people sometimes eat less than they need, particularly if they live alone or have a poor appetite. Adequate protein intake helps maintain muscle mass, while a varied diet rich in fruit, vegetables and whole grains supports overall health.
Avoiding smoking, limiting alcohol consumption and maintaining a healthy weight all contribute to healthier ageing. Keeping long-term medical conditions well controlled and attending routine health checks are also important.
Spending time with family and friends, joining community groups, volunteering or taking part in local activities can all support physical and mental wellbeing.
Frailty can increase risk of hospital admissions (Image: Getty)
What if someone is already frail?
Many people living with frailty can improve their strength, confidence and quality of life with the right support. Exercise remains beneficial even for people who are already frail.
Doctors may also review medications to reduce side effects or stop medicines that are no longer needed.
Good nutrition becomes even more important once frailty has developed. Some people benefit from a dietitian’s advice, while others may require treatment for conditions such as osteoporosis to reduce the risk of fractures.
Falls prevention is another key part of care. This may include checking vision and hearing, reviewing footwear, making homes safer and encouraging appropriate physical activity. Small changes can make a big difference to maintaining independence.
Looking ahead
Helping people remain healthy and independent for as long as possible is becoming increasingly important for our society. Frailty is one of the major challenges but it is not an unavoidable consequence of ageing.
Many of the steps that reduce the risk of frailty also improve health more generally. While none of us can stop the ageing process, we can influence how well we age.
By adopting healthy habits throughout life, and by recognising frailty early when it develops, we can remain active, independent and enjoy a better quality of life.
