Time-restricted eating may boost cognitive function in older adults, study suggests

A new global study indicates that the timing of meals, not just their content, could be crucial for maintaining cognitive health as people age. Researchers presented findings suggesting that consolidating all daily food intake within an eight-to-nine-hour window may significantly benefit the brain. This approach, a form of intermittent fasting, was explored in a six-month weight loss program involving 47 women aged 50 to 79 with overweight or obesity. All participants reduced their daily calorie intake by 500 calories. However, only 26 women adhered to a restricted eating window of nine hours or less, while the control group maintained a more typical 12-hour eating schedule. The study found that both groups lost a similar amount of weight, approximately 15 pounds (nearly 7 kilograms), indicating that the observed cognitive benefits were not solely due to weight loss. Women in the restricted eating group, who mostly ate between 10 AM and 6 PM, showed notable improvements in spatial planning and problem-solving tests. They also made fewer errors in memory and learning assessments, suggesting a positive impact of the eating schedule on cognitive performance. Lead researcher Sue Shapses noted that while weight loss aids in preventing age-related cognitive decline, the restricted eating window appeared to be the differentiating factor. The research team plans to conduct larger studies to confirm these findings across diverse populations, exploring potential mechanisms such as circadian rhythm influence, reduced inflammation, and improved metabolic health.