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Cannabis activates hunger neurons in rodents

Home Cannabis activates hunger neurons in rodents

Curated Research Library

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Cannabis activates hunger neurons in rodents

  • By: Ferreira, J.
  • Published On: 4 March, 2024
  • Publication: nature.com
  • Category: Neurology

A well-known effect of cannabis is the promotion of appetite. However, the neurobiological mechanism behind this stimulation is still unknown. A study in Scientific Reports demonstrates that neurons within the mediobasal hypothalamus, particularly in the arcuate nucleus, have a role in stimulating rat feeding behavior linked to cannabis exposure. When compared with animals exposed to air, rats exposed to cannabis exhibited an increase in food intake and locomotion in the presence of food. Additionally, these rats showed an increase in the activity of mediobasal hypothalamic neurons when exposed to cannabis vapors. Chemically inducing the activation of the cannabinoid receptor 1 in mice, located in the arcuate nucleus region, attenuated the inhibition of hunger-promoting mediobasal hypothalamic neurons. By contrast, inhibition of arcuate nucleus neurons decreased appetite, showing the important role of these neurons in hunger behavior. These data provide a mechanistic insight into how cannabis impacts appetite, offering potential treatment avenues for eating disorders.

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