Yes. Insulin resistance can cause pronounced post-meal sleepiness or “crashes” in some individuals. A common mechanism is rapid glucose spikes followed by sharp drops, accompanied by hormonal fluctuations. After high-carb meals, higher insulin release may lead to low energy and reduced focus a few hours later. Insulin resistance can also coexist with sleep apnea, frequent nighttime awakenings, and poor sleep quality, amplifying daytime fatigue. The strategy is clear: increase protein and fiber structure in meals, reduce refined carbohydrates, add a short post-meal walk, and strengthen sleep hygiene. If daytime sleepiness is severe or persistent, clinical evaluation is appropriate for both metabolic status and possible sleep disorders.