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Shorter Meal Window Boosts Brainpower
30 Jul
Summary
- Restricting meals to 8-9 hours daily improved cognitive function in older women.
- Participants in shorter eating windows showed better problem-solving skills.
- Time-restricted eating may support brain health via circadian rhythm regulation.

New findings presented at the American Society for Nutrition's annual meeting indicate that restricting daily meal times to a shorter window, specifically 8 to 9 hours, may enhance cognitive function in older women. A six-month trial involving 47 postmenopausal women showed that those adhering to a time-restricted eating pattern performed better on tests measuring spatial planning and problem-solving.
While both groups achieved weight loss, the group with the restricted eating window demonstrated fewer memory and learning errors. Researchers propose that time-restricted eating could benefit brain health by influencing circadian rhythms, reducing inflammation, and improving metabolic health. This approach complements weight loss efforts in potentially warding off age-related cognitive decline, although experts stress it's one piece of a larger health puzzle.
This research highlights the importance of meal timing alongside diet composition and quantity. While promising, further large-scale studies are needed to confirm these benefits for brain health. Experts note that longer overnight fasting periods may improve insulin sensitivity and cellular repair. However, intermittent fasting is not suitable for everyone, and a balanced approach to cognitive health includes physical activity, sleep, and a healthy diet.