INTERMITTENT FASTING: HORMONAL IMPACT Intermittent fasting does a lot more than just help you shed a few pounds—it actually shakes up your hormones in ways that touch nearly every part of your health, from how you burn energy to how you handle stress or even sleep. One of the biggest shifts happens with insulin, the hormone that tells your body what to do with sugar. IF tends to lower insulin levels and makes your cells more responsive to insulin’s signals. That means your body becomes better at burning fat, rather than always relying on sugar for energy. Leptin, the hormone that helps you feel full, often drops as you fast longer. This is partly because you’re eating less and your fat stores are shrinking—a sign your body is adapting. On the flip side, ghrelin (the “I’m hungry” hormone) usually goes up when you first start fasting, which can make the first few days tough. The good news? People often find their hunger signals even out once their bodies get used to the new rhythm....