A sudden shift from fatty and sugary foods to a healthy diet may lead to an increased craving for alcohol, according to a study published in Alcohol: Clinical and Experimental Research.
The research was conducted on laboratory mice. In the first phase, the animals were fed a high-calorie diet rich in fats and sugars, after which they were abruptly switched to a healthier diet. To the researchers’ surprise, the rodents began choosing alcohol over water more frequently in behavioral tests.
According to the authors, the key factor was changes in the gut microbiota that occurred after the sudden dietary switch. The disruption of bacterial balance triggered the production of compounds that affect the brain’s reward system, which is responsible for pleasure and addiction. As a result, the brain “recalibrated” — having lost its usual source of pleasure from fatty and sweet foods, it began to seek a replacement.
“When a person suddenly gives up their usual but unhealthy diet, their gut bacteria literally rebel. This internal imbalance can create a craving for alcohol,” the researchers explained.
The authors emphasize that their findings are important to consider when promoting a healthy lifestyle. A drastic dietary change can cause not only physical stress but also unpredictable psychological effects. They warn that individuals already prone to alcohol misuse should be particularly cautious, as dietary changes may exacerbate the problem.
The scientists recommend gradually adjusting eating habits, reducing the amount of unhealthy food step by step so that the gut microbiome can adapt to new conditions. This gradual approach can help avoid risks and reinforce healthy habits without additional stress on the body.
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