I've had two instances of loose bowels the last week, and I noticed that the two things that coincided with these incidents were onions and also high fat consumption the day before (good fats, but fats nonetheless). Anyone see anything similar?

Both could be culprits for an unsettled stomach. Raw onion are particularly hard for me to digest, but I sure do love them.

Yeah... one time the onions were raw, the second they were in a soup I made. I'm wondering if the fact that the soup is so loaded with vegetables that it sort of got things moving.