How does duration affect blood sugar?

Duration significantly influences blood sugar levels and insulin sensitivity. According to Casey Means on the Commune with Jeff Krasno podcast, compressing food intake into a shorter window (like 6 hours) rather than spreading it over a longer period (e.g., 12 hours) leads to better glucose dynamics. This shorter eating window helps maintain peak and average glucose levels and improves overall glucose stability and insulin sensitivity because it gives the body a break from continuous insulin spikes. Additionally, eating the same meal in the morning results in a lower glucose response compared to the evening, likely due to higher insulin sensitivity and circadian influences 1 .