Just five days of overeating impacts long-term habits, study finds

A European study has found that just five consecutive days of overeating can prime the brain for future poor dietary habits. This research highlights the potential impact of short-term overconsumption of high-calorie foods on the brain.

German researchers recruited 29 healthy men in their 20s to consume ultra-processed foods in order to understand the effects of a high-calorie diet on the brain. The study divided participants into two groups: one group consumed ultra-processed foods, such as chocolate bars, brownies, and potato chips, for five consecutive days to increase their calorie intake. The other group served as a control group, maintaining their normal eating habits.

The study found that short-term overeating increases liver fat and disrupts insulin action in brain pathways involved in motivation and decision-making. This research suggests that just five days of overeating can prepare the brain for long-term poor eating habits, consequently affecting health.

Nutritionist Jemma O'Hanlon stated, "We really need to reduce our intake of ultra-processed foods." She pointed out that ultra-processed foods account for as much as 42% of the diet of Australians, a proportion that is too high. Increasing research indicates that these ultra-processed foods may be addictive.

Experts recommend that ultra-processed foods should be consumed occasionally and in small amounts each time. Controlling the intake of ultra-processed foods is crucial for maintaining long-term health, helping to avoid the formation of poor dietary habits.