It's not anxiety, and it doesn't "cause" it per say. Here's where the anxiety comes from. When the sugar starts to drop too low, the brain panics because it's only source of fuel is glucose. It can use ketones, but it takes awhile for this to kick in and you'll only feel sluggish and such. So, when the brain sense the drop, it causes a rush of adrenalin because it wants to get you to eat. Of course, if you're not aware of it, it may seem like anxiety because if you think about something that upsets you, it will, due to the hormones flying about. Also, after awhile, the brain starts to shut parts of itself off intermittently to keep everything stable. It has to keep the most important features running, so something like the neocortex, which is primarily for social skills, is not entirely necessary, so it diverts the sugar from there and you can get depressed, feel violent, have impulsive thoughts, you name it. Do not eat low carb protein bars, I do not suggest them. There are probably a ton of bad additives in there that your body has to work to get out of the system, thus causing more trouble for you. You can get all the protein you need from one single thing, an egg. If you want a good snack, have some hardboiled eggs handy. Splenda is terrible. "made from sugar" is a bunch of crap. There was a good article about this in discover magazine several months ago. Basically, to make splenda they have to replace a sugar molecule with one of chlorine. Of course, it's a very minute amount, but who wants to eat chlorine? Finding a doctor is hard. My family doctor back where my parents live is the only one I go to. He's familiar with my history and hypoglycemia so I couldn't be luckier. I don't suggest a nutritionist because they usually don't accept insurance and really only can give you what you probably already know. However, if you feel you're not getting a grasp of what you need to do, they can help and are usually pretty good at doing it i've heard, though i've never had to see one. Expect to go through phases, you won't get better all at once. First, it made it terribly worse, unless you've already passed this. Second, you'll suddenly feel great one day and then will experience sometimes violent mood/mental changes for a few weeks (up to 5 or 6, maybe more for some people depending on what they ate before the new diet). Then, they slowly start to get less and less intense, and eventually you even out, but yet don't feel totally well. You might get odd thoughts or sensations, but they don't cause the same problems and don't seem to bother you at all anymore. This is the third stage. After a few more weeks, you should be back to normal and then you can attempt to adjust the diet in terms of what you eat and how many times you eat. I've found the info through tons of different sites and books. The best one I can recommend is "hypoglycemia: the disease your doctor won't treat." excellent read and tons of good info. Biological is just what I call it I guess, i've heard some people inherit it and just have a pancreas that naturally secretes insulin too much, not in reaction to what they have eaten. It's very rare though.