on the brain
idiom
informal
: always in one's thoughts
I've had pizza on the brain all day.
He's got sex on the brain.
Examples of on the brain in a Sentence
Recent Examples on the Web
Scientists have long known that arsenic in drinking water is a health threat, but its affects on the brain were less clear.
—
Austin Corona, AZCentral.com, 30 Aug. 2025
PetMD experts say that dogs who experience cognitive dysfunction have a buildup of protein known as beta-amyloid that forms plaques on the brain.
—Alyce Collins, MSNBC Newsweek, 20 Aug. 2025
However, on the opposite end, the study showed signs of a possible detrimental effect on the brain when people had high B12 levels in their blood.
—Perri Ormont Blumberg, Time, 13 Aug. 2025
Antipsychotic agents have traditionally focused on the brain’s dopamine system, blocking type 2 dopamine (D2) receptors.
—New Atlas, 11 Aug. 2025
See All Example Sentences for on the brain
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Austin Corona, AZCentral.com, 30 Aug. 2025
PetMD experts say that dogs who experience cognitive dysfunction have a buildup of protein known as beta-amyloid that forms plaques on the brain.
—Alyce Collins, MSNBC Newsweek, 20 Aug. 2025
However, on the opposite end, the study showed signs of a possible detrimental effect on the brain when people had high B12 levels in their blood.
—Perri Ormont Blumberg, Time, 13 Aug. 2025
Antipsychotic agents have traditionally focused on the brain’s dopamine system, blocking type 2 dopamine (D2) receptors.
—New Atlas, 11 Aug. 2025
See All Example Sentences for on the brain
Cite this Entry
“On the brain.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/on%20the%20brain. Accessed 8 Sep. 2025.
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