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Food is the substance that we put into our bodies in the largest quantity, so it makes sense that what we eat affects how we feel. A study in the American Journal of Psychiatry found that food really does influence mood, and poorer quality diets are linked to some common psychiatric problems.
In a sample of over 1,000 women 20 to 93 years old, researchers investigated the association between different dietary styles—traditional, Western, and modern—and symptoms of depression and anxiety.
Using a dietary questionnaire, researchers assigned a diet quality score. More points were given for eating less red meat and more fruits, vegetables, and low-fat dairy, and high-fiber or multi-grain breads.
The study found that a traditional dietary pattern was associated with a lower likelihood of depressive and anxiety disorders, whereas a Western diet was associated with a higher likelihood of psychological symptoms and disorders. Higher diet quality scores were also associated with lower levels of psychological symptoms. The modern dietary pattern didn’t have a significant impact on depression or anxiety.
“A poor quality diet may be the result of mental health symptoms, rather than the cause,” said the study’s authors. So, while the study doesn’t prove that a poor diet causes mental illness, it adds to the growing body of evidence suggesting that diet quality can affect various aspects of human health.
In other words, when in doubt, stick with the original.
(Am J Psychiatry 2010;167:1–7)
Kimberly Beauchamp, ND, earned her bachelor’s degree from the University of Rhode Island and her Doctorate of Naturopathic Medicine from Bastyr University in Kenmore, WA. She cofounded South County Naturopaths in Wakefield, RI, and now sees patients in East Greenwich and Wakefield. Inspired by her passion for healthful eating and her own young daughters, Dr. Beauchamp is currently writing a book about optimizing children’s health through better nutrition.