Soy protein
Researchers at Oklahoma State University found that people with osteoarthritis, especially men, who ate 40 grams of soy protein per day for three months had less pain and moved more easily than those who didn’t. It’s tough to eat that much pure soy protein a day unless you add soy protein powder to shake or smoothie, but it is still worth adding a serving of soya beans, tofu, or soy milk to your daily food intake.