Dear [Name],
Welcome to week 5 of my series on prevention, where I’m taking what I consider to be the major health conditions and giving you my take on the medical evidence for reducing risk. It’s a long blog today, but please do read to the end as I would also like your thoughts on something relevant to this whole prevention series of emails.
This week I want to talk about something that does not always get the attention it deserves: frailty, strength and loss of independence. At first sight, this may seem less dramatic than a heart attack, stroke, cancer or dementia. But I would argue it is one of the most important topics of all. In day-to-day life, one of the things that most often changes someone’s world is not always a single dramatic diagnosis. It is the gradual loss of strength, confidence, balance, mobility and independence.
It is when someone stops going upstairs because they are worried they may not get down again.
It is when a trip to the supermarket becomes exhausting.
It is when gardening, travelling, walking the dog, playing golf, lifting grandchildren or getting up from the floor start to feel uncertain or unsafe.
That matters. A lot.
Why frailty and loss of independence matter
Frailty is not simply “getting older”. It is a state of reduced reserve, where the body becomes less able to cope with stress. A minor infection, a fall, a hospital admission or a new medication can have a much bigger impact on someone who is frail than on someone with better physical reserve.
This is why two people of the same age can look completely different clinically. One 80-year-old may be walking miles, travelling, playing sport, gardening and living independently. Another may be struggling with basic activities, falls, weakness and repeated hospital admissions. Their chronological age may be the same, but their biological reserve is very different.
This is also why I think the word “healthspan” is so useful. Lifespan is how long we live. Healthspan is how long we live with good quality function, independence and engagement with life. Most people do not simply want more years at the end of life. They want more good years.
What we can influence
As always in this series, this is not about blame. We cannot control everything. Age, genetics, previous illness, arthritis, neurological disease, medications, pain, caring responsibilities and social circumstances can all affect strength and independence. However it is also not true that loss of strength and independence is inevitable, or that nothing can be done.
We can influence muscle strength, balance, aerobic fitness, nutrition, bone health, falls risk, confidence and the ability to keep doing the things that matter to us.
The big areas I would focus on are:
Resistance training and maintaining muscle mass.
Balance work and falls prevention.
Aerobic fitness and reducing sedentary time.
Adequate protein, good nutrition and bone health.
Vision, hearing and medication review where appropriate.
Managing long-term conditions well.
Maintaining social connection and confidence outdoors.
The most important of these, in my view, is strength.
We are all familiar with the idea of saving money for retirement. But fewer people think about saving muscle for later life. Yet muscle is one of the most important forms of biological pension we have.
From around midlife onwards, we tend to lose muscle mass and strength unless we do something to preserve it. This is not just a problem for “older people”. I would argue that from about the age of 40 we should be focusing on this.
The important question is not simply how much muscle someone has, but what they can do with it.
Can they get out of a chair without using their arms?
Can they climb stairs?
Can they recover if they stumble?
Can they get up from the floor?
Can they do the activities that matter to them?
These are not trivial questions. They are central to independence.
Strength training is not just for athletes. Resistance training does not have to mean bodybuilding. It means deliberately challenging the muscles so that the body has a reason to maintain or improve strength. That might mean weights, resistance bands, machines in a gym, bodyweight exercises or supervised rehabilitation. The right starting point depends on the person, their health, their confidence and their current level of function.
Walking, cycling, swimming, dancing, gardening and sport all help maintain cardiovascular fitness, metabolic health and confidence with movement. However aerobic exercise alone is not enough. A long walk is excellent, but it does not replace strength and balance training.
Nutrition matters too. Older adults often need to pay more attention to protein, not less. Appetite may fall, illness may intervene, and weight loss can sometimes mean losing muscle as well as fat. This is particularly important with modern weight-loss drugs, where preserving muscle through resistance training and adequate protein should be a central part of the plan.
Bone health also matters. Osteoporosis often sits quietly in the background until a fracture occurs. For many people, especially women after menopause and older men with risk factors, bone health deserves proper thought.
Key takeaways
Frailty is not simply “getting older”.
Strength, balance and mobility are central to independence.
Muscle is a form of biological pension: it is much better to build and preserve it before you urgently need it.
Aerobic exercise is important, but it does not replace resistance training.
Nutrition, protein, bone health, vision, hearing, medication review and social confidence all matter.
The goal is not to become an athlete. The goal is to preserve the ability to live the life you want.
Prevention is not about blame or certainty. It is about stacking the odds in favour of independence.
A final thought
One concept I find very useful is the idea of training for future capability. This is different from exercising simply to burn calories or improve how we look. It asks a much more practical question: What do I want to be able to do in ten, twenty or thirty years’ time?
Do I want to be able to travel, walk around a city all day, play golf, climb hills, get down to the floor and back up again, carry my own suitcase, lift my grandchildren, stay in my own home, or recover well from an operation or illness?
If the answer is yes, then the training needs to start before those abilities are threatened.
Blood pressure matters. Cholesterol matters. Diabetes risk matters. Cancer screening matters. Dementia risk matters. But so does the ability to stand, walk, lift, balance, recover and keep participating in life.
Looking ahead, this is exactly the sort of area I am interested in for future preventive health and healthspan work. A good healthspan assessment should not just ask whether someone has a disease today. It should ask what they want to be able to do tomorrow, and what we can measure and improve now to give them the best chance of doing it.
Over the next 12–18 months, I am exploring whether there is enough interest to develop a physician-led preventive health and healthspan clinic on the South Coast.
The aim would be to combine advanced cardiovascular prevention, metabolic health, fitness assessment, body composition, exercise physiology, nutrition and long-term health planning within one medically supervised programme.
The focus would not simply be on detecting disease, but on helping people stay strong, capable, independent and healthy for as long as possible.