Not all carbs are created equal. Or, more accurately, not all carbohydrates have the same effect on blood sugar.
The measure of the effect of carbs on blood sugar is called the “glycemic index” (GI). High GI carbs like white bread, instant mashed potatoes and sugary beverages digest quickly, causing blood-sugar levels to surge. In the body, these blood-sugar spikes prompt the release of insulin, fat storage, mood swings and brain fog. Then blood sugar plummets, causing the release of the stress hormone cortisol, food cravings, fatigue and more brain fog.