The answer would be yes, according to popular wisdom. It is widely believed that nightmares come easier after a copious meal.
A better approach would be to say that food affects your ability to fall sleep and how deep your sleep would be. The recommendation about having your main meal at least two hours before going to sleep reflects this. Digestion slows down, almost stops, when we sleep. When one is in the middle of digestion is more difficult to fall sleep, or, if managing to sleep, it would be not deeply. This gives more chance to the REM phases coming up, the ones when dreams happen.
Certain mushrooms act as hallucinogen –create dreams- because of the drug-like substances they contain .so does alcohol. Many of them are only safe in very small quantities.
One Comment
I am wondering if anyone finds that green peppers seem to be the culprit in weird dreams. It seems like everytime I have one I have eaten green peppers the day before.