Obesity is associated with lowered opioid receptor availability (top row) whereas availability of dopamine receptors remains unchanged. Brains in the left column belong to obese people and brains in the right column to normal-weight people.
Credit: Aalto University
The research was funded by the Academy of Finland, Sigrid Juselius Foundation and The Finnish Diabetes Research Foundation.
The findings are published on March 4, 2015 in the scientific journal the Journal of Neuroscience.
Article: Henry K. Karlsson, Lauri Tuominen, Jetro J. Tuulari, Jussi Hirvonen, Riitta Parkkola, Semi Helin, Paulina Salminen, Pirjo Nuutila, Lauri Nummenmaa: Obesity Is Associated with Decreased ?-Opioid But Unaltered Dopamine D2 Receptor Availability in the Brain. The Journal of Neuroscience, March 4, 2015. 35(9):3959-3965. DOI: 10.1523/JNEUROSCI.4744-14.2015.