3 ms·

> caffeine and coffee in general Why coffee specifically? Other things contain caffeine. Tea, for example.

• erkkie 11y ago
  Tea also contains L-theanine which modulates the effects of caffeine: http://www.ncbi.nlm.nih.gov/pubmed/10737183 http://www.ncbi.nlm.nih.gov/pubmed/10737183
  • provemewrong 11y ago
    True, but in miniscule amounts. Significantly lower than the doses taken by the people who use L-theanine as a supplement. Also L-theanine to caffeine ratio is all wrong. >Why pick pure l-theanine and caffeine over green or black tea? >Most studies done on the l-theanine-caffeine combination have a l-theanine to caffeine ratio that isn't consistent with ratios you would expect from most teas. The studies used about twice as much l-theanine as caffeine by weight. The ratio found in most teas is reversed, with the possible exception of high quality green tea. [1] [1]: http://www.reddit.com/r/Nootropics/wiki/faq http://www.reddit.com/r/Nootropics/wiki/faq
    • veidr 11y ago
      Which is why I drink high quality green tea.
• rrss1122 11y ago
  I would guess because coffee is so widely consumed in the US.