caffeine

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

These neurotransmitters naturally become less active with age and in diseases like Alzheimer's, so caffeine may help counteract that decline.

From Science Daily • May 13, 2026

Even relatively small amounts of caffeine can have noticeable effects.

From Science Daily • May 13, 2026

Across those studies, caffeine drinkers had a 6%-16% lower dementia risk compared to non-drinkers, with one to three cups of coffee appearing to provide the greatest benefit.

From Science Daily • May 13, 2026

Coffee and tea contain other compounds beyond caffeine that may benefit the brain as well.

From Science Daily • May 13, 2026

And I can't help but think: maybe Tiny Cooper should fry his brain with caffeine more often.

From "Will Grayson, Will Grayson" by John Green and David Levithan