Assertion: soft drink's caffeine | /r/Causes | nervousness
Facets:
Source sentences:
text: Too much caffeine can cause headaches, irritability, nervousness and rapid heart rate.
text: Caffeine can cause nervousness, anxiety, jitteriness, stomach upset, rapid heart rate and trouble sleeping – but doesn't increase kids' energy levels!
text: Too much caffeine can cause nervousness, irritability, insomnia, increased heartbeat and elevated blood pressure.