- Here’s how much coffee is safe to drink every day, research says USA Today
- Five Cups of Coffee a Day Is Fine for Most Adults, Heart Association Says WSJ
- Caffeine and Cardiovascular Disease professional.heart.org
- Coffee and heart health: How many cups of caffeinated coffee are safe to drink each day? Medical Xpress
- Up to 5 cups of coffee per day may potentially lower heart disease risk, doctors say ABC News – Breaking News, Latest News and Videos
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