4 ms·Gastric ulcers are caused by a bacteria (Heliobacter pylori), not the stress of running a startup.by anthonyb 15y agoGastric ulcers are caused by a bacteria (Heliobacter pylori), not the stress of running a startup.ofca 15y agobacteria are caused by a lack of immunity that is caused by the stress of running a startup :)anthonyb 15y agoThey're still easily treated with antibiotics. I'd hate for someone to quit their startup because they thought that stress was the primary cause.