Scientists at the University of South Australia found that walnuts can reduce stress as they positively impact the gut microbiome, which is linked to mental health.
The journal Nutrients points out that the researchers studied the case of 80 student volunteers, who divided them into two groups: the first group received walnuts, and the second group followed their usual diet.
The researchers asked the first group to eat about half a cup of walnuts a day. This state lasted 16 weeks, during which participants took three tests: at the beginning of the semester, during the examination period, and after its completion.
The results showed that mental health scores, metabolic biomarkers, and sleep quality improved over the long term for the first group. As for the second group, they complained about high levels of stress and depression before the exams.
Researchers attribute these results to the fact that walnuts are rich in omega-3 polyunsaturated fatty acids, antioxidants, melatonin, polyphenols, folic acid, and vitamin E, which promote brain and gut health.
The researchers plan to include men in follow-up studies to determine if eating nuts affects sex.
Source: Linta. EN