10. Red Peppers

Red peppers are loaded with vitamin C, crucial for collagen production, which keeps joints strong and flexible. Eating red peppers regularly can help maintain healthy cartilage, ligaments, and tendons—all critical for pain-free knee movement. Add them raw to salads, roast them for meals, or include them in your stir-fries. Their vibrant color and health benefits make them a tasty and effective food for natural joint healing.