Low Blood Sugar Levels How Can You Increase My LOW BLOOD SUGAR?

How can you increase my LOW BLOOD SUGAR? - low blood sugar levels

I am 14 and I think I have sugar in the blood. I am using do not eat too much ... I am so giddy when I think about something (such as stressed, if I) get a shot. Since I have to lower my blood sugar several times to almost the consciousness that I would be 4-5 times the blood sugar level

So .... How do I get my blood sugar in the blood?
and how dangerous it is to have sugar in the blood?