Study Reveals ‘Profound’ Link between Dietary Choices and Brain Health
New research published in Nature has shown that a healthy, balanced diet was linked to superior brain health, cognitive function and mental wellbeing. The study, involving researchers at the University of Warwick, sheds light on how food preferences influence more than just physical health, and also significantly impact brain health.
With the help of machine learning, the researchers analysed a large sample of 181 990 participants from the UK Biobank, comparing their dietary choices against a range of physical evaluations, including cognitive function, blood metabolic biomarkers, brain imaging, and genetics.
The food preferences of each participant were collected via an online questionnaire, which the team categorised into 10 groups (eg, alcohol, fruits and meats).
A balanced diet was associated with better mental health, superior cognitive functions and even higher amounts of grey matter in the brain – linked to intelligence – compared with those with a less varied diet.
The study also highlighted the need for gradual dietary modifications, particularly for individuals accustomed to highly palatable but nutritionally deficient foods. By slowly reducing sugar and fat intake over time, individuals may find themselves naturally gravitating towards healthier food choices.
Genetic factors may also contribute to the association between diet and brain health, the scientists believe, showing how a combination of genetic predispositions and lifestyle choices shape wellbeing.
Lead Author Professor Jianfeng Feng, University of Warwick, emphasised the importance of establishing healthy food preferences early in life. He said: “Developing a healthy balanced diet from an early age is crucial for healthy growth. To foster the development of a healthy balanced diet, both families and schools should offer a diverse range of nutritious meals and cultivate an environment that supports their physical and mental health.”
Source: University of Warwick
