How to Use pineal gland in a Sentence
pineal gland
noun-
The pineal gland is a pea-sized body located deep in the brain.
—Neuroskeptic, Discover Magazine, 30 Sep. 2020
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Melatonin is a hormone that is produced by the pineal gland in the brain.
—Amber Smith, Discover Magazine, 15 Dec. 2022
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The smallest organ is the pineal gland, located in the back of the brain.
—Scott Lafee, San Diego Union-Tribune, 15 July 2025
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Melatonin is a brain chemical that is released by the pineal gland.
—Amber Smith, Discover Magazine, 13 Oct. 2022
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This portion of the brain instructs the pineal gland to secrete melatonin.
—John Schandelmeier, Anchorage Daily News, 21 Dec. 2019
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Your body does normally produce melatonin, thanks in big part to your pineal gland.
—Bruce Y. Lee, Forbes, 7 June 2022
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Your pineal gland controls your release of melatonin throughout the day.
—Elizabeth Barnes, Verywell Health, 19 Mar. 2025
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Melatonin is a hormone made by the pineal gland, which is located in the middle of the brain.
—Larry Carroll, Discover Magazine, 12 Oct. 2022
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The pineal gland, which is located in the middle of the brain, does have a connection to sleep.
—Caitlin Pagán, Verywell Health, 11 July 2023
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Melatonin is a hormone naturally produced by the brain’s pineal gland.
—Serena Coady, SELF, 3 Feb. 2022
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Because of his cancer, Steve has the uncalcified pineal gland of a teenager rather than an adult.
—Jennifer Ouellette, Ars Technica, 22 Nov. 2020
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Deep within the brain lies a pea-sized gland called the pineal gland, which primarily produces the hormone melatonin.
—Miriam Fauzia, USA TODAY, 24 Nov. 2020
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The pineal gland in the brain releases melatonin in response to darkness, which helps regulate your sleep–wake cycle.
—Lindsay Curtis, Verywell Health, 31 Mar. 2026
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Melatonin is a hormone the pineal gland produces that is essential for regulating sleep.
—Elizabeth Barnes, Verywell Health, 19 Mar. 2025
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What melatonin does In the evening, your body begins to produce melatonin, which is made primarily by the pineal gland.
—Veronique Greenwood, Time, 10 Nov. 2025
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Secreted by the pineal gland, its presence in sufficient amounts is vital for the maintenance of a healthy sleep wake cycle.
—Amber Smith, Discover Magazine, 14 Aug. 2023
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Melatonin, a hormone primarily secreted at night by the pineal gland, is a major driver of such changes.
—Jon Cohen, Science | AAAS, 13 Mar. 2020
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Melatonin is a natural hormone produced in the body by the brain’s pineal gland which partially controls the sleep-wake cycle.
—Ashley J. Dimella, FOXNews.com, 4 Oct. 2025
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It is produced in the pea-size pineal gland, which is nestled in the middle of your brain and syncs melatonin production with the rising and setting of the sun.
—Anna Goldfarb, New York Times, 24 Apr. 2020
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Melatonin is secreted by the pineal gland, located deep within the brain, and released into the bloodstream.
—Sandee Lamotte, CNN, 22 Mar. 2021
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This hormone is produced by the pineal gland in the brain and regulates sleep and wakefulness and tends to increase in the winter due to the lack of sunlight.
—Sherri Gordon, Health, 9 Dec. 2024
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Darkness removes that inhibition and allows the pineal gland to release melatonin.
—Sally Ibrahim, The Conversation, 23 June 2026
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The hormone is secreted throughout the night by the pineal gland in the center of the brain, inducing and maintaining drowsiness.
—Claudia Wallis, Scientific American, 18 Nov. 2017
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Sleep is regulated by a hormone called melatonin, which is produced in the pineal gland and is triggered by special light receptors in our eyes.
—Literary Hub, 17 June 2026
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Taking a melatonin supplement before bed will not affect the pineal gland’s natural secretion of it.
—Dr. Michael Daignault, USA TODAY, 3 Dec. 2021
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Even when our eyes are closed, light can get through our eyelids’ thin skin, and reach the retina, which signals the pineal gland to stop making melatonin, a hormone that regulates sleep.
—Marni Jameson, OrlandoSentinel.com, 4 Apr. 2018
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Even when our eyes are closed, light can get through our eyelids' thin skin, and reach the retina, which signals the pineal gland to stop making melatonin, a hormone that regulates sleep.
—Contributing Writer, NOLA.com, 2 Apr. 2018
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When light disappears in the evening, the pineal gland starts producing melatonin, the molecular messenger of darkness.
—Literary Hub, 17 June 2026
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Melatonin is a naturally occurring hormone produced by the pineal gland that helps regulate the sleep-wake system.
—Elizabeth Chang, Washington Post, 20 June 2022
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This wellness trend is all about, well, maximizing your sleep every night with practices like mouth taping, pineal gland meditation, sleeping in a cold room, and more.
—Sherri Gordon, Health, 12 May 2025
Some of these examples are programmatically compiled from various online sources to illustrate current usage of the word 'pineal gland.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
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