- You are often moody
Some studies have linked sugar to mood disorders such as depression. In addition to blood sugar fluctuations, sugar can confuse neurotransmitters in the brain that regulate mood. Sugar, in particular, causes a spike in the feel-good hormone serotonin. Because we know carbs affect neurotransmitters, it may make you feel good at first. But the higher your blood sugar rises and the faster your blood sugar falls, the long run, they may make you feel worse. This is also why you often feel headaches and tiredness.
The best way to stabilize your blood sugar and mood is to eat more foods that take longer to digest, like whole grains, fiber, and protein.
