Every kilo on your body is roughly 4 kilos of force through your knees when you walk. Losing 10 kg = 40 kg of load.
The math
Knee osteoarthritis pain is closely correlated with body mass. Weight loss is the single most effective intervention for early knee OA — more than physiotherapy, more than analgesics.
Combine with strength
Strengthening quadriceps and glutes protects the knee further. Don't avoid all movement — choose low-impact (cycling, swimming, walking on level ground) over running.
When surgery comes off the table
Patients scheduled for knee replacement who lose 15+ kg often have it deferred or cancelled by the orthopaedic surgeon.
