Second, constant hunger is a symptom of high insulin levels. When there is a lot of insulin in our body, built up over years of glucose spikes, our hormones get mixed up. Leptin, the hormone that tells us we are full and should stop eating, has its signal blocked, while ghrelin, the hormone that tells us we are hungry, takes over. Even though we have fat reserves, with lots of energy available, our body tells us we need more – so we eat.
