High-fat diets may trigger anxiety and neurological decline in weeks

A new study from Tomsk State University has uncovered how diet directly influences mental health. Researchers found that high-fat foods can trigger neurological problems and behavioural shifts in mice within weeks. The findings highlight the importance of diet in preventing conditions like anxiety disorders.

The experiment involved ICR mice placed on a high-fat diet containing 40% saturated fats. By the third week, the animals showed clear neurological deficits. Their reactions to sounds became abnormal, and their motor activity dropped significantly.

Further analysis revealed that the diet altered the mice’s gut microbiota. This shift changed the production of short-chain fatty acids, which act as key signalling molecules between the gut and brain. These acids support the 'gut-brain' axis, a communication network linking digestive health to mental state. The researchers stressed that controlling the diet of lab mice is essential for reliable studies on human diseases. Their results suggest that dietary adjustments could play a vital role in medical research, particularly in understanding and preventing mental health disorders.

The study confirms that diet has a measurable impact on neurological function and behaviour. These insights could guide future research into anxiety and other mental health conditions. Proper dietary management in experiments may also improve the accuracy of findings related to human diseases.