Neisseria gonorrhoeae (IMAGE) University of California - San Diego Caption Neisseria gonorrhoeae bacteria may have driven the evolution of human gene variants that protect against dementia. Credit National Institute of Allergy and Infectious Diseases, National Institutes of Health Usage Restrictions Credit must be given to the creator. Only noncommercial uses of the work are permitted. License CC BY-NC Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.