This post is from a low-reputation account and contains an unverified outbound link. Be cautious before clicking external links.
Our body needs energy to function, and most of this energy comes from sugar in the blood. After we eat, our body breaks down food into sugar and sends it into the blood. Then, a hormone helps move that sugar into our cells where it's used as fuel. When this process doesn't work well, sugar stays in the blood instead of entering the cells.