In one person with obesity and type 2 diabetes, changes in intense food cravings were linked to changes in a specific brainwave pattern in a region involved in reward processing during treatment with...
Mechanism
Synthesis from 1 study
The drug changes how brain cells in the reward area communicate, making slow brain waves stronger. When those waves get stronger, food feels more tempting. When they weaken, food doesn't feel as urgent. The only data we have shows this pattern matches cravings — not the other way around.
Most probable mechanism
When the drug increases in the brain, it changes how brain cells in the reward center fire together at slow rhythms. When these slow rhythms get stronger, the brain starts paying more attention to food cues, making cravings harder to ignore. When the rhythms weaken, food doesn't feel as urgent or tempting.
Tirzepatide crosses the blood-brain barrier and binds to GLP-1 and/or GIP receptors in the nucleus accumbens
Receptor binding alters neuronal membrane potential or synaptic transmission, increasing synchronization of delta-theta frequency oscillations (≤7 Hz) in the nucleus accumbens
Elevated delta-theta power enhances the salience of food-related stimuli by amplifying motivational signaling in the mesolimbic reward circuit
Increased salience of food cues leads to heightened subjective food preoccupation and craving
Evidence from Studies
Supporting (0)
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Contradicting (1)
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Brain activity associated with breakthrough food preoccupation in an individual on tirzepatide
Gold Standard Evidence Needed
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