Large-scale analysis reveals the negative effects of sugar-heavy diets on memory

A meta-analysis of 27 rodent studies found that high-sugar and high-fat diets can impair memory.

Switching from an unhealthy diet to a healthier one improved memory test results, but recovery was limited, especially with added sugar.

The findings suggest that poor eating habits may leave lasting effects on the hippocampus and memory, even after diet changes.

Researchers at the University of Technology Sydney say long-term healthy eating may be important for protecting brain health.