Myths vs facts: Glukose and sleep

The relationship between glucose and sleep is complex and often clouded by myths. A common myth is that eating sugar or carbohydrates before bed inevitably leads to poor sleep. In fact, a small, balanced carbohydrate meal can promote melatonin production and may even improve sleep onset. Another myth is that people with normal blood glucose have no sleep issues related to glucose. The fact is: even in healthy individuals, significant blood glucose fluctuations – both high and low – can disrupt sleep architecture, particularly deep sleep stages. Research shows that a high glycemic load in the evening correlates with more frequent awakenings. However, effects are highly individual, depending on insulin sensitivity, genetics, and lifestyle. The provided context does not contain specific studies on this topic, so this answer is based on general scientific literature. Caveat: The evidence is mostly observational and insufficient for personalized recommendations. For individual advice, continuous glucose monitoring and sleep logs should be considered.