New Delhi, Nov 2026 : Going to bed earlier could offer benefits beyond feeling refreshed the next morning, with a new study suggesting that sleep timing may also play an important role in weight management, particularly among people with prediabetes.
The research, published in the journal Nursing Research, examined nearly 200 adults with prediabetes who regularly slept for fewer than 6.5 hours a night. Researchers found that participants who went to sleep earlier experienced greater weight loss over an eight-week period than those who maintained later bedtimes.
While the intervention did not lead to significant improvements in blood glucose levels, the findings indicate that when people sleep, in addition to how long they sleep, may be an important factor in managing body weight and supporting metabolic health.
The researchers randomly divided participants into two groups. Both groups followed an eight-week lifestyle programme covering healthy eating, physical activity and stress management through weekly video sessions. However, one group received additional guidance on improving sleep habits.
The sleep coaching included advice on maintaining regular sleep schedules, gradually shifting bedtime earlier, improving sleep hygiene and increasing overall sleep duration. Participants were also encouraged to use their beds primarily for sleeping rather than other activities.
Researchers monitored participants through daily sleep diaries, continuous glucose monitors and wrist-worn actigraphs, which recorded sleep patterns before and after the intervention.
Both groups reported improvements in sleep and weight loss. However, those receiving additional sleep coaching showed greater improvements in sleep quality, reduced daytime sleepiness and a noticeable shift towards earlier bedtimes.
Susan Kohl Malone, assistant professor at New York University's College of Nursing and lead author of the study, said sleep timing appeared to be an important but often overlooked factor in weight management and metabolic health.
Interestingly, researchers found that earlier sleep onset was associated with greater weight loss regardless of whether participants belonged to the sleep-coaching group. Changes in sleep duration alone did not demonstrate the same relationship.
The study estimated that every hour earlier a participant fell asleep was associated with approximately 1.3 pounds (0.73 kg) of additional weight loss over eight weeks.
Why Earlier Bedtimes May Help With Weight Loss
Researchers identified several possible explanations for the association between earlier sleep and weight reduction.
One possibility is that going to bed earlier reduces opportunities for late-night snacking. People who remain awake for longer periods may be more likely to consume additional calories outside regular meal schedules, potentially increasing their overall food intake.
Sleep timing may also influence the body's metabolic processes. Insulin sensitivity and glucose tolerance generally decline during nighttime hours. Eating late in the evening may therefore interfere with the body's natural metabolic rhythm. An earlier bedtime could help reduce late-night eating and encourage more regular meal timings.
Exposure to artificial light is another possible factor. Staying awake late often involves prolonged use of mobile phones, televisions and other electronic devices. Such exposure can interfere with the body's natural sleep-wake cycle and affect sleep quality.
Inadequate or irregular sleep may also influence hormones responsible for regulating hunger and appetite. Ghrelin, commonly known as the hunger hormone, stimulates appetite and may contribute to increased food consumption when sleep patterns are disrupted.
Poor sleep has also been linked to higher levels of stress hormones such as cortisol. Elevated cortisol may affect appetite regulation and insulin sensitivity, potentially making weight management more difficult.
Sleep Is Not a Substitute for Diabetes Prevention
The findings highlight the potential importance of sleep timing as an additional component of weight-management strategies, particularly for people with prediabetes, a condition in which blood glucose levels are higher than normal but not yet within the range of Type 2 diabetes.
However, researchers cautioned that the eight-week programme did not produce significant improvements in blood glucose levels. Going to bed earlier should therefore not be viewed as a treatment for prediabetes or a replacement for medical care.
Healthy eating, regular physical activity, weight management and appropriate medical monitoring remain essential for reducing the risk of progression to Type 2 diabetes.
Maintaining a consistent sleep schedule, avoiding unnecessary late-night meals and getting adequate rest may complement these established measures.
The study adds to growing research on the relationship between sleep habits and metabolic health, suggesting that a healthier routine may involve not only getting enough sleep but also paying attention to when the body rests.
(Disclaimer :The content of this article is sourced from a news agency and has not been edited by the Mavericknews30 team.)
Disclaimer: This article is for general informational purposes only and is not medical advice. The study does not establish that earlier bedtimes treat prediabetes or guarantee weight loss. Consult a qualified healthcare professional for personalised guidance.
