62 yr old male. Just sharing my experiences. I have had near fainting / passing out occurrences that started in 2022 April. A very sudden feeling that I was blacking out, no warning, a little scary. The first time was at work, people saw me and called EMT. I went to ER, they checked heart, all good, I went home 5 hours later. These episodes continued for 3 months, about 2-3 times a week some worse than others. I would have a feeling of vertigo that would last for up to 6 hours. I did a lot of walking when they would come, felt worse lying down. For me, the episodes seemed to be triggered with eating. I changed my diet to very bland foods (ate a lot of oatmeal, stopped drinking coffee), ate small bits throughout the day. I've always tried to eat very healthy, Mediterranean diet, no junk foods, low sugar, lots of water, etc. I lost about 10 lbs. Then one day 3 months later I just felt different and they stopped. A year later same happened again. Again seemed to be triggered after eating. I again became very cautious with what I ate and it seemed to fade away in about 2 months. Lost another 10 lbs. Had a couple really bad episodes in Aug 2023, once I almost fell down some stairs. Went to ER for this event too and they checked heart again, all good. I've been to neurologist and 4 different G/I docs, 3 different PCPs, cardiologist.; Seems too hard for anyone to want to dig into. I have had some suggest I have a problem with my vagus nerve. I never experienced any of this in my life until past couple years. Digestive issues began after I got my covid shots in 2021. I was really sick/nauseous after the shot (hadn't been sick for many many years before that) and felt nauseous, and generally weak for the next 3-4 weeks; eating made me feel nauseous. I started seeing G/I docs then and have been on acid blockers since then. Really, I'm just trying to control this by what and how I eat.