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Coffee & Health

What is actually in the cup, at the doses people actually drink. Caffeine by brew method, whether coffee contains fibre, what the antioxidant claims are worth. Written carefully, because this is the corner of coffee writing where confident nonsense does the most damage.

Four coffees in a row overhead: an espresso, a flat white, a mug of filter and a glass of cold brew.
August 31, 2026

How Much Caffeine Is in Coffee?

By brew method, by bean and by cup size, with the two things that change it most and the one everybody gets backwards.

The word fibre written on a wooden board surrounded by fruit, vegetables, nuts and grains.
August 31, 2026

Does Coffee Have Fiber?

Yes, a small amount, and it is not the kind you are picturing. It comes from the roast rather than the bean.

A cup of coffee on a wooden board surrounded by fruit, vegetables, nuts and dark chocolate.
August 31, 2026

Coffee Antioxidants: What They Are and What They Are Worth

Coffee is the largest source of antioxidants in many national diets. That says as much about the diets as it does about coffee.

Dark roasted coffee beans beside the chemical structure of a tannin, a phenol ring with three hydroxyl groups.
August 31, 2026

Tannins in Coffee: The Dryness You Can Feel

Less than tea, more than you would guess, and responsible for the puckering sensation that gets blamed on bitterness.

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