Scientists have reported on the effect of diet on cognitive functions

Limiting the daily meal period to eight to nine hours can moderately improve spatial planning and problem solving in overweight or obese women over the age of 50. This was reported on July 26 in the journal Medical Xpress.

The clinical trial involved 47 women aged 50 to 79 years. All participants were overweight or obese and were advised to reduce their daily energy intake by 500 kcal. Twenty-six women were additionally offered to eat for less than nine hours a day.

As a rule, they ate from 10:00 to 18:00 and stopped eating about four hours before bedtime. The average duration of their food window was 8.2 hours. The participants in the control group continued to distribute meals for about 12.3 hours a day.

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After six months, the women in both groups lost an average of about 6.8 kg. The researchers did not find a significant difference in weight loss between the groups. At the same time, participants who followed an eight- to nine-hour eating window performed better on spatial planning and problem solving tests. They also tended to decrease the number of errors in memory and learning tasks, but this difference did not reach statistical significance.

The researchers did not identify the advantages of time-limited nutrition in tests for multitasking and reaction speed. Thus, the effect did not extend to all cognitive functions.

Scientists have not yet established the mechanism of possible impact. They suggest that synchronization of nutrition with circadian rhythms, changes in metabolism, the functioning of nutrient recognition systems, and the level of inflammation may be important.

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