Coffee side effects
Across 346 first-hand reports, people mentioned a side effect 107 times (about 31 per 100 reports). The most common: anxiety, jitteriness, insomnia. User reports show what people notice — they can't tell you whether Coffee is safe for you.
Reported side effects
anxiety42
jitteriness37
insomnia11
stomach issues10
tolerance3
drowsiness2
overstimulation1
diuretic1
What got worse for some people
In their own words
“Many people report that quitting coffee improved or even cured their IBS, including me. I quit coffee about three years ago and I feel better without the caffeine rush.”
“So i quit coffee. First two days sucked. But now, everything is lighter, temporary and I am finding giggles in everyday items.”
“All that I know is that I feel like shit when I drink it. Beyond the short boost I only notice negatives.”
“I quit coffee and caffeine for 30 days and saw no benefit. Went back.”
“Coffee gives me severe anxiety, so I just don't drink it. Caffeine raises cortisol levels and interferes with circadian rhythm.”
“So a cup of cold brew coffee in the morning can keep me up at night, but I will yawn all day long and feel groggy all day.”