Problem: You’re Always Hungry and Have Intense Sugar Cravings
If it feels like your sweet tooth is insatiable, you might not be too far off track. Eating sugar activates the part of your brain that responds to rewarding things—think sex, drugs, and alcohol—giving you a rush of dopamine. Like with these other rewards, you may start to crave the rush and want more and more sugar to satisfy your cravings. Additionally, because simple sugars like those found in candy and soda are digested quickly, you might get hunger pangs sooner after eating sweets than more filling foods. Finally, sugar can also disrupt the hormone leptin, which signals to your brain that you’re full. One study found that a high-sugar diet made mice less sensitive to leptin signaling. In other words, the more sugar the mice ate, the less full they felt.