Harvard doctors announced the miracle food: It renews mental health and intestinal flora

A promising scientific study on the vital link between nutrition and mental health has been published. According to a study conducted by Harvard Medical School researchers, consuming blueberries regularly every day relieves symptoms of depression in elderly individuals and also rearranges the intestinal flora.

Molecular nutritionist Dr. The research team, led by Courtney Millar, examined a group of sedentary individuals aged 65 and over. While some of the participants were given freeze-dried blueberry powder, equivalent to approximately two glasses of fresh fruit, every day for three months, the other group was given a placebo (inert powder).

Although mental recovery symptoms were noted in both groups at the end of the three-month period, it was determined that depressive symptoms decreased much more strongly, significantly and steadily in individuals who regularly consumed blueberries.

One of the most striking findings of the research was the direct effect of blueberries on the intestinal microbiome. Analyzes showed that the structure of 6 different bacterial enzymes that triggered chemical reactions in the intestines of participants who consumed blueberries changed.

Among these changes, the production of "gamma-aminobutyric acid" (GABA), which is vital for brain health, stood out. It was found that levels of the enzyme that produces GABA, a neurotransmitter directly associated with depression and anxiety disorders, increased with blueberry consumption.

Scientists emphasize that the strong anthocyanin pigments and high fiber content that give blueberries their dark blue color directly feed the intestinal flora. Thanks to the two-way communication network between the gut and the brain (gut-brain axis), this positive microbiome change in the digestive system is directly reflected in the nervous system and improves mood.

Although experts remind that the research is still in its early stages (pilot study), they state that this natural eating habit, which has no side effects, offers an extremely practical and protective mental health support, especially for older adults with limited mobility. The Harvard team reports that extensive clinical trials will be initiated to confirm the findings in larger population groups.