Your body doesn’t treat breakfast and dinner the same way, and once you understand why, meal timing becomes a powerful lever for better health. We dig into chrononutrition, the science of how circadian rhythms shape appetite, insulin sensitivity, and energy metabolism, and we translate it into simple steps that fit real life.

We start by mapping the daily hormone dance: morning light sparks a cortisol rise that mobilizes energy, adenosine builds sleep pressure through the day, and melatonin ushers in nighttime repair. 

Those rhythms change how your body handles the same plate of food across the clock. Insulin sensitivity is highest earlier, glucose tolerance declines later, and fat oxidation slows in the evening. That shift helps explain why late-night eating links to insulin resistance, prediabetes, type 2 diabetes, and cardiovascular risk, even when total calories don’t change.

From there, we reframe fasting. Skipping breakfast often reduces calories but can backfire metabolically, with worse insulin sensitivity and blood pressure. Early time-restricted eating tells a different story: front-load calories, move dinner earlier, and minimize late-night intake. Studies show improved insulin sensitivity, blood pressure, and cardiometabolic markers when the eating window aligns with the body clock. A calorie at 8 a.m. meets a system primed to use energy; the same calorie at 10 p.m. meets a system preparing for sleep.

You’ll leave with clear, practical tools: anchor breakfast and lunch, keep dinner earlier and lighter, aim for consistent meal timing, get bright light soon after waking, dim light at night, and treat late snacking as a stressor. Whether your goal is better glucose control, sustainable weight management, or heart health, aligning meals with your circadian rhythm can amplify results without adding restriction.

If this helped reframe how you think about food timing, follow the show, share it with a friend who loves nutrition science, and leave a review with your biggest takeaway.

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Peace, love, plants!
Dr. Jules