Tracing the Neural Circuitry of Appetite

Hungry? New post on NIH Director’s blog highlights a new study examining the neural circuitry behind appetite!!!

NIH Director's Blog

MC4R PVH neurons-the heart of hungerCaption: A stylized image of the MC4R-expressing neurons (in red) within the brain’s PVH, which is the “heart of hunger”
Credit: Michael Krashes, NIDDK, NIH

If you’ve ever skipped meals for a whole day or gone on a strict, low-calorie diet, you know just how powerful the feeling of hunger can be. Your stomach may growl and rumble, but, ultimately, it’s your brain that signals when to start eating—and when to stop. So, learning more about the brain’s complex role in controlling appetite is crucial to efforts to develop better ways of helping the millions of Americans afflicted with obesity [1].

Thanks to recent technological advances that make it possible to study the brain’s complex circuitry in real-time, a team of NIH-funded researchers recently made some important progress in understanding the neural basis for appetite. In a study published in the journal Nature Neuroscience, the researchers used a variety of…

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