The reduced risk of knee arthritis may be another benefit of fiber rich foods. Two studies with over 6,000 participants were published in the “Annals of Rheumatic Diseases”. With the increase of fiber in the diet there was a noticeable decrease of arthritic pain in the groups by as much as 30%. Some smaller studies produced results by as much as 60%. There was no noticeable difference in results even when age, sex, race, education, caloric intake, physical activity or types of fats were taken into consideration. How fiber reduces inflammation is unclear. Considering how it has been proven to reduce weight, improve cardiovascular health and reduce the risk of diabetes, it is probable that there are many more benefits that have not yet been discovered.