02/04/2025
Research shows a Western diet increases the risk of neurodevelopmental conditions — including ADHD and autism.
A Western diet during pregnancy can affect babies in the future and could increase their risk of developing ADHD and autism, according to a major study from the University of Copenhagen.
The Western diet is characterized by high levels of fat, sugar, and processed foods, and low levels of vegetables, fruit, and fish.
Researchers analyzed data from over 61,000 mothers and their children and found a strong link between this kind of diet and later neurodevelopmental disorders. Even small shifts toward Western eating patterns were tied to higher rates of ADHD, and one group also showed a connection to autism.
The strongest effects appeared in the first and second trimesters, pointing to early pregnancy as a critical period for brain development. Blood tests revealed markers of inflammation and cell damage tied to the mothers' diets, offering a possible explanation for the brain effects.
While the study doesn’t prove direct causation, it suggests that even modest improvements in diet during pregnancy could help lower risk. The researchers argue for better, nutrient-focused dietary guidelines to support healthier outcomes for children and reduce long-term developmental risks. Beyond pregnancy outcomes, the Western diet has been linked to a wide range of health issues, including obesity, type 2 diabetes, cardiovascular disease, and chronic inflammation. Long-term consumption of high-fat, high-sugar, and low-nutrient foods can disrupt metabolic and immune function, which not only affects individual health but can also influence fetal development during pregnancy.
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