Scientists have recently made a groundbreaking discovery in the fight against obesity: intermittent calorie restriction has been found to lead to significant changes in both the gut and the brain, offering new possibilities for maintaining a healthy weight.
A study conducted by researchers from China followed 25 obese volunteers over a period of 62 days as they participated in an intermittent energy restriction (IER) program. This program involved carefully controlling calorie intake and incorporating fasting on certain days. The results were impressive, with participants losing an average of 7.6 kilograms (16.8 pounds) or 7.8 percent of their body weight.
Lead researcher Qiang Zeng from the Second Medical Center and National Clinical Research Center for Geriatric Diseases in China highlighted the importance of their findings, stating that the IER diet had a profound impact on the brain-gut-microbiome axis. The changes observed in the gut microbiome and in the activity of obesity-related brain regions during and after weight loss were dynamic and interconnected.
The exact mechanism behind these changes and the direction of influence between the gut and the brain are still unclear. However, it is well-established that the gut and the brain have a close relationship, suggesting that targeting specific brain regions could potentially help control food intake.
Functional magnetic resonance imaging (fMRI) scans revealed alterations in brain activity in regions known to regulate appetite and addiction, such as the inferior frontal orbital gyrus. Additionally, changes in the gut microbiome, analyzed through stool samples and blood measurements, were associated with specific brain regions. For instance, the bacteria Coprococcus and Eubacterium hallii were linked to activity in the left inferior frontal orbital gyrus, which plays a role in executive function and willpower related to food intake.
Medical scientist Xiaoning Wang from the State Clinic Center for Geriatrics in China emphasized the bidirectional communication between the gut microbiome and the brain. The microbiome produces neurotransmitters and neurotoxins that influence brain function, while the brain controls eating behavior and dietary nutrients shape the composition of the gut microbiome.
Obesity affects over a billion people worldwide and increases the risk of various health issues. Understanding the intricate relationship between the brain and the gut could revolutionize obesity prevention and management strategies.
Biomedical scientist Liming Wang from the Chinese Academy of Sciences raised important questions about the mechanisms by which the gut microbiome and the brain interact in obese individuals, especially during weight loss. Identifying the specific gut microbiome and brain regions crucial for successful weight management is key to maintaining a healthy weight.
The research findings were published in Frontiers in Cellular and Infection Microbiology, shedding light on the potential of intermittent calorie restriction in addressing the obesity epidemic.
