Being told to lose weight for your knees is easy advice to give and hard advice to follow when walking is what hurts. If pain is the thing standing between you and regular activity, the useful first step is building movement your joints can currently tolerate and increasing it from there. Here is how that works in practice.
It runs in a predictable order. A knee or a back starts hurting, so activity drops. Muscle strength falls, so the joint has less support and hurts more with the same tasks. Confidence drops, activity falls further, weight gain often follows, and the load on the joint increases. Each step makes the next one more likely.
The loop can be entered at any point, which is good news, because the entry point that works for most people is capacity: build the muscle around the joint and increase activity gradually, and both the pain and the activity levels tend to move in the right direction together.
NICE names therapeutic exercise and weight management, where appropriate, as the core treatments for osteoarthritis, alongside information and support. It also notes that exercise has a clinically important benefit for people with osteoarthritis and a better safety profile than common alternatives such as analgesia, and that supervised exercise appears to be more beneficial than unsupervised exercise (NICE NG226).
Two practical implications follow. Weight management and exercise work together rather than in sequence, so there is no need to wait until you have lost weight before starting to move. And supervision matters, because the difference between exercise that helps and exercise that flares a joint is mostly a matter of dose.
The starting point is whatever you can do today without paying for it tomorrow. That might be five minutes of walking, or sit-to-stands from a high chair, or a stationary bike with light resistance.
PhysioHub is a physiotherapy clinic, so the part we own is movement: working out what your joints can currently handle, prescribing exercise at the right dose, treating the pain that is limiting you, and progressing the plan as your capacity improves. For dietary advice, medication and structured weight management programmes, your GP is the right route, including referral to NHS weight management services and dietetic support where appropriate.
Those two halves work well together. People generally find that dietary changes stick better once activity is comfortable and routine, and that activity becomes easier as weight comes down. Sleep is worth including too, since poor sleep raises pain sensitivity and appetite. Our article on pain, stress and sleep covers that link.
Mounjaro became the first weight loss injection GPs in England can prescribe, with the criteria widening around June 2026, and NHS England has been clear that the full rollout runs over years rather than months. Reporting in 2026 found fewer than half of England's commissioning bodies had begun prescribing. Plenty of people around Uckfield and Wealden are therefore sitting between being told to lose weight and having a usable route to any help with it.
The obstacle that shows up in this clinic is seldom willingness. It is that moving hurts. An arthritic knee, a back that has been sore for a decade, or feet that give out after twenty minutes make "exercise more" unusable advice, and every previous attempt ended in a flare that cost a fortnight. What works is a starting dose of activity your joints tolerate today, progressed slowly enough that the momentum survives. Walking round the shops without hunting for a bench comes a long way before anything that looks like a workout.
If you would rather start with a conversation than a booking, a free discovery and triage call is the easiest way in.
Should I wait until I have lost weight before starting exercise?
No. Exercise and weight management are both core treatments and they support each other. Starting at a level your joints tolerate is what makes the routine sustainable.
Will exercise damage an arthritic knee?
Appropriately dosed exercise is protective. Joints are loaded tissues that respond to use, and stronger muscles reduce the stress transmitted through the joint.
Does PhysioHub offer a weight loss programme?
We provide the exercise and rehabilitation side, which is often the missing piece for people whose pain limits activity. Dietary and medical weight management is best arranged through your GP, and the two work well in parallel.
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