Eating for Better Sleep & Foods that Improve Metabolic Health | Dr. Marie-Pierre St-Onge

This episode explores the intricate connection between what we eat and how we sleep. Dr. Marie-Pierre St-Onge explains that nutrition is not just about weight management but is a primary lever for regulating sleep architecture. A central theme of the discussion is the impact of macronutrients on sleep quality. Specifically, diets high in saturated fats and refined sugars are linked to more fragmented sleep and less time spent in deep sleep stages. Conversely, diets rich in fiber and complex carbohydrates tend to support more restorative rest. The guests discuss the physiological mechanisms behind these effects, noting how blood glucose fluctuations can trigger nighttime awakenings. Dr. St-Onge also emphasizes the importance of meal timing. She suggests that eating too close to bedtime can interfere with the body's natural cooling process and insulin response, potentially disrupting the circadian rhythm. The conversation shifts toward metabolic health, highlighting how poor sleep creates a vicious cycle of insulin resistance and increased cravings for high calorie foods. By improving sleep through targeted nutritional choices, individuals can better regulate their hunger hormones like ghrelin and leptin. The episode provides practical protocols for structuring a daily eating window to maximize metabolic efficiency. This includes focusing on high quality proteins and slow digesting carbohydrates during the day. The discussion concludes with a look at how personalized nutrition can help people manage chronic conditions such as type 2 diabetes. The overall message is that sleep and nutrition are bidirectional. Improving one almost always leads to the improvement of the other. Listeners are encouraged to view their plate as a tool for neurological and metabolic optimization. By aligning food intake with the biological clock, people can experience better cognitive function and physical health.