Preventing mental health conditions

 Several observational studies have shown a link between overall diet quality and the risk of depression.

For example, one review of 21 studies from 10 countries found that a healthful dietary pattern — characterized by high intakes of fruit, vegetables, whole grains, olive oil, fish, low fat dairy, and antioxidants, as well as low intakes of animal foods — was associated with a reduced risk of depression.

Conversely, a Western-style diet — involving a high intake of red and processed meats, refined grains, sweets, high fat dairy products, butter, and potatoes, as well as a low intake of fruit and vegetables — was linked with a significantly increased risk of depression.

An older review found similar results, with high compliance with a Mediterranean diet being associated with a 32% reduced risk of depression.

More recently, a study looking at adults over the age of 50 years found a link between higher levels of anxiety and diets high in saturated fat and added sugars.

Interestingly, researchers have noted similar findings in kids and teenagers.

For example, a 2019 review of 56 studies found an association between a high intake of healthful foods, such as olive oil, fish, nuts, legumes, dairy products, fruits, and vegetables, and a reduced risk of depression during adolescence.

However, it is important to keep in mind that while observational studies can show an association, they cannot prove cause and effect.

Also, even with randomized controlled trials, there are several limitations when it comes to nutrition research studies, including difficulties with accurately measuring food intake.

Researchers often rely on participants recalling what they have eaten in previous days, weeks, or months, but no one’s memory is perfect.

 Source: Medical News Today