There's even more evidence that coffee is good for your heart — and 4 cups a day might be the ideal amount

There's even more evidence that coffee is good for your heart — and 4 cups a day might be the ideal amount  Business Insider Caffeine could protect the heart by helping it make energy, mouse study finds  ABC News The Healthy Addiction? Coffee Study Finds More Health Benefits  Scientific American CDKN1B/p27 is localized in mitochondria and improves respiration-dependent processes in the cardiovascular system ...  PLOS NIH study finds that coffee drinkers have lower risk of death  National Institutes of HealthFull coverage

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