“Tea, coffee and brain cancer”(NHS Choices),
“Caffeine helps cut brain cancer risk,” said the Daily Express, reporting that a daily cup of tea or coffee can stop tumours growing by restricting blood flow to the brain.カフェインを摂取すると血流が下がる．もちろん，脳の腫瘍への血流も下がるので腫瘍の成長も抑えられる，という話らしい…