I was also constantly lightheaded/dizzy, and had some weird symptoms like hair loss and
slight weakness in the left side of my body. I also had a lot of gas and
would belch all the time. I had heart palpitations and anxiety, and headaches a few times a month. Finally, I started noticing that I had to eat at least every two hours or I would get really lightheaded, and because I was nauseous a lot I had to force myself to eat.