All articles tagged with #time restricted eating
A 12-week Johns Hopkins study found that a 10-hour eating window helped adults with obesity and prediabetes lose weight and improve eating habits without reducing calorie intake, though it did not significantly alter appetite hormones or inflammation markers.
A small six-month pilot study of 47 overweight or obese postmenopausal women (ages 50–79) found that those who ate within an 8–9 hour daily window improved cognitive test scores—especially in spatial planning and memory—more than participants who ate over about 12 hours, despite similar weight loss in both groups; researchers caution that larger, longer trials are needed before recommending time-restricted eating for brain health.
In a six-month pilot study of 47 older women with overweight/obesity, those who ate within an 8–9 hour window as part of a calorie-reduction plan showed greater improvements in spatial planning and problem-solving than those who ate over about 12 hours, despite similar weight loss (~15 lb). The results hint that time-restricted eating may boost certain cognitive functions beyond weight loss alone, but larger trials are needed to confirm and explore underlying mechanisms.
A six-month, 47-woman trial suggests restricting daily eating to an eight-to-nine-hour window (vs a typical 12-hour window) may modestly improve certain cognitive tasks—such as spatial planning and memory accuracy—among overweight/obese women aged 50–79, on a reduced-calorie diet. Both groups lost about 15 pounds; however, findings are preliminary, not yet peer-reviewed, and larger studies are needed to confirm clinical relevance.
A small study of 47 overweight and obese women aged 50–79 found that eating all daily calories within a nine-hour window (roughly 10 a.m.–6 p.m.) led to similar weight loss as a 12-hour eating pattern, but participants in the time-restricted group showed better performance on cognitive tests of memory, attention, and problem-solving, suggesting meal timing and circadian alignment may help brain health in aging—though larger studies are needed to confirm the findings.
A small trial of 47 overweight or obese women aged 50–79 found that restricting daily meals to a nine-hour window (roughly 10 a.m.–6 p.m.) produced modest cognitive benefits—better memory, spatial planning, and problem-solving—despite similar weight loss to a 12‑hour eating window group. Findings are preliminary and require confirmation in larger studies to determine if meal timing can protect cognitive health over time.
A small six-month trial with 47 overweight/obese women aged 50–79 found that those who ate within an 8–9 hour daily window (and cut calories by 500) showed greater improvements in spatial planning and problem-solving than peers who ate over ~12 hours, despite similar weight loss (~15 lb). Memory tasks tended to improve as well but not significantly; no differences in reaction time or multitasking. The results suggest meal timing could offer cognitive benefits beyond weight loss, but larger studies are needed to confirm and explain the mechanisms (circadian rhythm, inflammation, metabolism).
A six-month pilot in 47 overweight/obese women aged 50–79 found that restricting eating to an 8–9 hour window (about 10 a.m.–6 p.m.) with a 500-calorie daily reduction yielded similar weight loss to a 12-hour window but produced greater improvements in spatial planning and problem-solving, with a trend toward fewer memory errors. No significant differences were seen in multitasking or reaction time. Findings are preliminary and require confirmation in larger studies; researchers will explore circadian, metabolic, and inflammation-related mechanisms. Presented at Nutrition 2026.
A small pilot trial of 47 women aged 50–79 with overweight/obesity found that confining daily meals to a nine-hour window (roughly 10am–6pm) and avoiding food four hours before bed did not change weight loss (both groups shed about 7 kg on average) but those in the time-restricted group showed better performance on spatial planning and problem-solving tests, with hints of memory improvements. The results are preliminary and need confirmation in larger studies, but they suggest eating timing may influence cognitive aging through circadian, metabolic, and inflammatory mechanisms.
A 12-week 16:8 time-restricted eating study with 99 overweight adults found that weight loss persisted for a year after the program, with both early (before 10 a.m.) and late (after 1 p.m.) eight-hour windows outperforming a 12+ hour eating window. Early eating also preserved more fat mass. About one-third continued fasting independently, suggesting the approach is feasible outside the study context.
A secondary analysis of a 12-week trial found that time-restricted eating (an 8-hour window) maintained weight loss at the one-year follow-up, with benefits seen regardless of whether the eating window started early, late, or was self-selected. Some groups experienced fat-free mass loss, and only about a quarter continued TRE after the program, but overall body measurements (weight, fat, neck/waist) remained improved versus controls. Limitations include a small, single-center sample, self-reported data, and potential underpowering, so larger studies are needed to confirm long-term safety and efficacy. TRE should complement, not replace, healthy eating and physical activity.
Intermittent fasting is a time-based eating approach (commonly an 8–10 hour window with fasting the rest of the day) that may aid weight loss and metabolic health, but long-term effects are still unclear. It’s not universally safe or appropriate—teenagers, pregnant or breastfeeding individuals, and people with certain health conditions should be cautious, and extreme fasting can add stress to the body. Before starting, assess your goals and consult a qualified professional such as a registered dietitian.
A Northwestern University study on overweight and obese adults found that delaying the last meal to at least three hours before bedtime improved nighttime heart rate and blood pressure, as well as morning glucose regulation, without calorie restriction, suggesting an earlier dinner window may benefit overall cardiometabolic health—though the small, mostly female sample and lack of meal-content data limit generalizability.
A Northwestern University study found that stopping meals earlier in the evening to extend the overnight fasting window and better align with sleep can improve heart rhythm and blood sugar control in adults at elevated risk of heart disease, highlighting meal timing as a key factor in cardiometabolic health beyond calories or content.
A small study of 39 adults with overweight/obesity found that stopping eating at least three hours before bed (a 13–16 hour overnight fast) improved nocturnal blood pressure dipping and reduced resting heart rate, and also improved glucose control, compared with a shorter habitual fast of 11–13 hours. The benefits occurred without cutting calories and are thought to arise from better alignment with circadian rhythms, though results may not generalize to everyone; gradual habit changes and attention to daytime meals can help implement this approach.