Per my integrative pdoc...

Unfortunately, being prone to low sugar (I was at your age) makes people susceptible to diabetes later in life, because the inability of the body to keep the glucose under control is bad whatever the direction is (too low or too high). This is bad news for me, since I have much family history of diabetes but hoped to avoid it since I still tend to low sugar. The pdoc disillusioned me.

Not to scare you, but you should be getting yearly fasting glucose tests. At your age it is not a generally used protocol, but you really should know your baseline, especially since such a wide range of intertwined somatic symptoms seem to be set in motion by hypoglycemia.

Another possibility is that you have

http://www.mayoclinic.org/diseases-c...n/con-20026900

I have it. A cardiologist diagnosed me. He advised me to lie flat on my back with legs raised up at the first sign of a fainting spell .

I actually once hurt myself a bit when I fell down the carpeted stairs in a fainting spell. Had the stairs been concrete instead...ouch.

While the cardiologist's advice may seem funny, it is definitely the case that raising your arms above the heart level, say, by reaching into a tall closet, may trigger a fainting spell.