If the same beans taste sharp and thin one week and flat the next, roast level is often the reason your usual grind-and-ratio setup stops working. A change in roast is a change in the coffee itself, …
Coffee Research and Confounding: Why Habits Around the Cup Matter
By CoffeeWeekly.com Editorial Team | Last updated September 11, 2026 Two coworkers each drink three cups of coffee a day. One also smokes and sleeps five hours a night; the other doesn't smoke and …
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Acrylamide in Coffee: How to Fact-Check Cancer Claims
Someone shares a post claiming coffee contains a "cancer chemical," and you're not sure whether to worry. Acrylamide, a chemical that can form in coffee during roasting, is usually the substance …
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Water Quality and Coffee Brewing: Minerals, pH and Flavor
Does water quality affect coffee taste? Yes — water makes up more than 98% of brewed coffee, and its mineral content and pH determine how much flavor gets pulled from the grounds. Calcium, magnesium …
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Coffee During Pregnancy: How Much Is Safe, What Guidelines Say and Why Evidence Varies
How Much Caffeine Is Safe During Pregnancy? The American College of Obstetricians and Gynecologists (ACOG) advises pregnant women to limit caffeine intake to 200 milligrams per day, roughly the …
Green Tea Catechins: Evidence and Safety Guide
Editorial note: This is product-neutral beverage education. It has no seller link, product pitch, price, or purchase call to action. By CoffeeWeekly.com Editorial Team Green tea is often promoted as …
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