Comparable use of oral contraceptives or hormone substitute therapy did not show a significant effect on the risk of developing RA. Lead researcher Dr Mitra Keshavarz, of Malm, Medical center University, Sweden, said of the study, ‘Whilst other studies claim that hormonal elements play a part in the advancement of RA, and we know that pregnancy can result in a noticable difference in RA symptoms, we wished to investigate the long term effect of breast-feeding. This study particularly highlights the potential of naturally-induced hormones in protecting individuals from developing RA later on. Furthermore, it increases the growing body of evidence towards breasts feeding and its positive health implications , this time around demonstrating its defensive benefits for the mom.’ Related StoriesNovel modular partial wrist implant may provide relief for patients with unpleasant wrist arthritisRheumatoid arthritis significantly increases risk of death due to cardiovascular causesArthritis sufferers to be greater contributors to clinical guideline developmentThe study found that breasts feeding for 13 or more months was connected with a reduced threat of developing RA .Faraone ; Alan I. Green , Alfonso Nieto-Castanon ; and Peter LaViolette . About the McGovern Institute at MIT The McGovern Institute for Mind Research at MIT is led by a team of world-renowned neuroscientists committed to meeting two great issues of modern science: focusing on how the mind works and discovering new ways to prevent or treat brain disorders. The McGovern Institute was established in 2000 by Patrick J. McGovern and Lore Harp McGovern, who are committed to improving human welfare, conversation and understanding through their support for neuroscience study.