After a long, stressful day at work, or when pressed for time, the temptation to have a quick, satisfying snack – like crisps or a chocolate bar – can be strong. Research shows that these ultra-processed, high-calorie foods play a significant role in the development of obesity, but the lasting effects these foods have on the brain was not clear – until now.
Surprisingly, even short-term consumption of highly processed, unhealthy foods can significantly reduce insulin sensitivity in the brains of healthy people. This effect persists even after returning to a normal diet, as shown in a recent study my colleagues and I conducted, highlighting the brain’s important role in the development of obesity.
