Regardless of the risk to many organ systems, excess weight is a significant burden on our joints.
When you’re walking, every extra kilo you carry doesn’t just add one kilo of pressure to your knees. It adds about four. Researchers who study joint mechanics have found that for every 1kg of body weight, your knees feel roughly 4kg of force with each step.
So if you’re carrying 10kg more than feels comfortable for your body, that’s not an extra 10kg on your knees when you walk. It’s closer to an extra 40kg, every single step, all day long.
Your hips do a bit better, feeling around two to three times your body weight with each stride. Your lower back also carries a multiplied load, which is a big part of why extra weight around the middle so often shows up as lower back pain rather than staying quietly out of the way.
Fat tissue, particularly the fat stored around your organs, isn’t just sitting there. It’s active. It releases inflammatory chemicals that circulate through your whole body. This is part of why joint pain can show up in places that never carry weight at all, like your hands, and it’s a big clue that joint pain isn’t purely a mechanical story about wear and tear. It’s also a chemistry story.
The genuinely good news
Losing just 10% of your body weight, alongside some movement, has been shown to bring real, measurable relief to knee pain and function, often more relief than exercise or diet alone can offer separately. And because of that 4kg multiplier, every kilo you lose takes about 4kg of pressure off your knees with each step.
Lose 5kg, and your knees are carrying roughly 20kg less load, every stride, every day.
You don’t need a dramatic transformation for your joints to feel it. Small, sustainable changes add up to real relief, and that’s exactly the kind of change we build together.