Depression is one of the major health topics that is dealt with globally. It has become so common that at least one of the persons in our closed circle has undergone depression. Depression is also one of the leading causes of suicides globally. So, tackling depression is very essential, and the psychological community around the world is helping a lot of people battle through. But there has always been a question in recent times.
Can diet influence depression in any way? A recent thesis by Florian Thomas-Odenthal, a master’s student in Psychology at Leiden University, says that there is a scant chance that can happen.
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The author studied around 50 articles, including literature reviews, systematic reviews, and meta-analyses, each one with increasing order of strict protocols. He discovered the fact that a fraction of the literature of reviews has a strong conclusion about diet influencing depression, whereas none of the meta-analyses drawn to such a conclusion.
He also added that their own meta-analyses showed no strong link between both. This shows that literature reviews are too forcible in drawing conclusions and often end up in public, creating dilemmas.
The author explains the fact that confirmation bias is the driving factor behind all this. The bias occurs when the author unintentionally gives too much weightage to his own findings in a manner to support his hypothesis. The chances of this occurring in a metanalysis or systematic review. This explains the fact that literature reviews having strong conclusions.
Thus, the fact diet can influence depression falls under this roof. The author thinks this can also apply to other fields as well and asks researchers to be more aware. This can raise speculation on the authenticity of narrative reviews in the absence of narrative reviews.
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