A placebo-controlled, double-blind, randomised trial of boys with autism found that two to three servings of cruciferous vegetables a day improves social interaction, abnormal behaviour and verbal communication - within a matter of weeks.

In this quote, Michael Greger, a physician and well-known advocate for plant-based nutrition, references a placebo-controlled, double-blind, randomized trial that studied the effects of cruciferous vegetables on boys with autism. The study found that incorporating two to three servings of these vegetables into the diet improved various aspects of autism symptoms, such as social interaction, abnormal behavior, and verbal communication, within just a few weeks. Greger’s reference to this clinical trial suggests that nutrition can play a role in improving certain behaviors associated with autism, potentially offering an alternative or complementary approach to treatment.

The use of a placebo-controlled and double-blind study design is important because these methods are considered the gold standard in scientific research. By ensuring that neither the participants nor the researchers know who is receiving the treatment versus the placebo, the study minimizes bias and increases the reliability of the results. The randomized trial further strengthens the validity of the findings by randomly assigning participants to different groups, ensuring that any observed effects are likely due to the intervention rather than other factors.

Greger highlights the power of cruciferous vegetables—such as broccoli, cauliflower, and Brussels sprouts—which are known for their rich nutrient content, including vitamins, minerals, and antioxidants. The study's results suggest that these vegetables may have a significant impact on behavior and cognitive function in children with autism. This suggests that diet could be an important factor in managing certain aspects of autism, emphasizing the role of nutrition in overall health and well-being.

Ultimately, Michael Greger’s quote underscores the potential of dietary interventions in improving the health and behavior of individuals with autism. By referencing a clinical trial, Greger advocates for the integration of cruciferous vegetables into the diets of those with autism, suggesting that such a simple dietary change could lead to notable improvements in key areas like socialization and communication.