Contrary to what many think, skipping meals can in fact skyrocket your blood sugars. This may sound absurb to many as not eating anything also means not consuming any form of sugar which would raise blood sugars levels at all. Well, this is not the case.
When we do not consume food for several hours due to sleep or missed meals, our liver is activated to produce glucose for energy. However, for most type 2 diabetics, the liver is less sensitive to blood sugar levels and continues to release glucose even when there is enough glucose in the bloodstream. Fortunately, by consuming a small amount of carbohydrates, the brain sends a signal to the liver to stop releasing glucose and prevent blood sugar from rising to unhealthy levels. This is why skipping meals, in particular breakfast, has an adverse effect to blood sugar levels.
For diabetics who are on glucose-lowering medications like sulfonylureas or insulin injections, skipping meals can lead to hypoglycemia or low blood sugar which can cause dizziness, fainting, blurred vision, confusion, anxiety, irregular heartbeat etc. Skipping a meal also tend to cause overeating later on.