Oh, interesting, and I can relate!

Incidentally, after being a heavy coffee drinker (5-10 cups per day for many years), I cut my coffee intake to zero. This happened around 3 years ago. At the same time, I started using earplugs every night. Pretty much since I started doing that, I dream several times a week. Previously I had dreams maybe once per month. I suspected that this dreaming was the effect of using earplugs, but now I wonder if it might be the caused by me not drinking coffee (for the curious, I replaced coffee with green tea).