Here’s the thing. If you want it to be an aid to your writing, there are reasons to be cheerful. If you want to think that it’s dangerous in any way, here you go.
There are a lot of people who don’t drink coffee, and it is easy to assume that there are plenty of writers who are very creative without resorting to caffeine intake at all. Coffee may stimulate creativity for some, while for others it may result in the mind’s being too alert for creativity to freely flow. Coffee may have health benefits, but there may also be negative effects if one drinks too much of the beverage.
As for me? I started writing this article while drinking a hot cup of coffee, but now my cup is empty. The buzz of caffeine alertness is gone, and I’m considering having a second cup. Or, perhaps to encourage creativity, I should just let my mind wander instead.
Ellis Shuman Writes: Does Caffeine Make You a Better Writer? – Ellis Shuman (19 March 2014)
Read the full piecefor balanced but leaning-toward-coffee detail.