In three individuals, including one taking tirzepatide, brain wave activity in the nucleus accumbens at frequencies below 7 Hz increased during intense food-focused thoughts compared to periods...
Mechanism
Synthesis from 1 study
When someone has intense food cravings, slow brain waves in a reward center get stronger — this happens whether or not they're taking a specific medication. The medication might make these waves stronger by affecting brain receptors, which changes how brain cells talk to each other. This makes food...
Most probable mechanism
When someone has intense cravings for food, slow brain waves in a reward area of the brain get stronger. A medication called tirzepatide may make this happen by binding to special receptors in that brain area, which changes how brain cells communicate and sync up their activity. This increased slow-wave activity makes food seem more important and harder to ignore, leading to stronger cravings.
Tirzepatide crosses the blood-brain barrier and binds to GLP-1 and/or GIP receptors expressed on neurons or glial cells in the nucleus accumbens
Receptor binding alters neuronal membrane potential or synaptic transmission, increasing synchronization of neural activity in the delta-theta frequency band (≤7 Hz)
Increased delta-theta oscillations in the nucleus accumbens enhance the salience of food-related stimuli and amplify motivational drive
Delayed neuroadaptive changes in mesocorticolimbic circuitry, occurring approximately 7 weeks after oscillation increase, amplify behavioral expression of food preoccupation
Evidence from Studies
Supporting (1)
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Brain activity associated with breakthrough food preoccupation in an individual on tirzepatide
Contradicting (0)
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