Managing type 1 and type 2 diabetes mellitus well can delay or prevent complications that affect your eyes, kidneys and nerves. Diabetes mellitus doubles your risk for heart disease and stroke, too. Fortunately, controlling the sugar in your blood will also make these problems less likely.At night, your hormones are very busy at work, recovering and rejuvenating from daytime and preparing your body to wake up. For this purpose, a group of hormones is released at around 3-4 in the morning, which provides you with the energy you need for awakening - one of the effects of this is glucose in the bloodstream FBS. It's called "Dawn Phenomenon" and increases your sugar levels.
Another possibility is something called the "Somoga Effect". It is when glucose levels drop super low overnight, which activates your emergency backup system, triggers hormones again, and sends messages to your liver and muscles to send sugar to the system, which can bounce back very high. The effect of soma is more likely to occur in those who take insulin.