But what we wanted to understand is what theyre doing in the brain. Key findings GLP-1 drugs act not only on metabolic pathways but also on brain circuits linked to reward Researchers identified a pathway connecting the hindbrain, central amygdala and dopamine-producing neurons The drugs reduce not just hunger, but the desire for high-calorie, rewarding foods Findings may help explain both therapeutic benefits and side effects such as nausea or reduced pleasure Beyond appetite suppression GLP-1 receptor agonists were originally developed to treat Type 2 diabetes by improving insulin response, with weight loss emerging as a secondary benefit
5 A 2021 study 6 also showed the benefit of whey protein powder in increasing GLP-1 levels compared to a control meal
Berberine induces GLP-1 secretion through activation of bitter taste receptor pathways
Additionally, we review emerging combination drugs and oral GLP-1RA formulations aimed at improving efficacy and patient adherence
Vicente-Gutierrez C, Bonora N, Bobo-Jimenez V, Jimenez-Blasco D, Lopez-Fabuel I, Fernandez E, et al