Coffee refill? Go for it, says American Heart Association, with note of caution. (news.harvard.edu)
¶“Coffee contains not just caffeine, but numerous bioactive compounds like polyphenols, which may have health benefits,” Hu said. “Studies have shown that the metabolism of the polyphenols by the gut bacteria leads to production of beneficial metabolites, the small-molecule chemical compounds produced by the bacteria, which can reduce oxidative stress and reduce chronic inflammation, and may even have beneficial effects on insulin sensitivity.”
¶The pick-me-up provided by caffeine may be just a side benefit of drinking coffee. Its chemistry is complex. Up to five cups a day, you say? Looks like I’ve got some room for improvement.