Hello, all. I am a 28yr old male. I have been having some symptoms that cause me a little concern. I get really light headed, my hands get real shaky, and I notice some mental clarity issues if I do not eat on schedule. I have to eat something every few hours or I get these symptoms. My weight is not too bad, I am 5'-10 and weight 190#. I notice too that after I eat, my heart tends to beat a little faster, and I get headaches almost daily. Could these symptoms be a pre-cursor to diabetes?