The other day I made some chili using dried kidney beans. I soaked them overnight then added them into chili and it was great. I had a bunch of leftover beans that I added to my lunch salad and thought nothing off it. They taste like sprouted beans which is much different than canned beans but I just associate that with 'healthy tasting' since it's supposed to activate enzymes:
Three hours after eating my salad I didn't feel so hot - fever-like symptoms and upset stomach. I laid down for nearly an hour before realizing what was going on. Food poisoning. I quickly googled "beans soaking sick" and came across this top hit:
A few more searches confirmed my suspicion, uncooked beans can wreck you, especially kidney beans:
The next hour I spent making trips to the bathroom, throwing up and I'll spare the details. I didn't let that stop me from heading out on a 4.84 mile run with Jim at 5:15 though. After the first mile I realized I was in trouble and had to pull over just after two miles and again at a port-o-potty with just under a couple miles left. After the run, as I was backing out of his driveway, I had to throw up so I ran into some shrubs and heaved a few times. After that I continued to feel a little sick until around 8pm when I could finally get some broth and rice down with a slice of bread. Everything was better the next morning but man, that hit fast and hard. Figured I would have learned this at some point in life but no one else I've talked to seemed to know anything about the toxicity of beans.