I don't think that's the best solution.

^I'm sure the tests can wait a day or two while OP gets their strength back

Why is this at negative votes? If this is seriously affecting her health then she should seriously stop following the doctor's instructions

Well, not fully ignore him, console with him if he has enough tests. And then make the decision wether or not if you should stop for your own health.

well duh, they need to run tests to figure out what's wrong.

Fasting is usually for blood work. If the OP eats it will effect the results and they will have to retake the tests. All done in *vein. Best thing is to take the blood test as early as the office opens so that the OP doesn't have to be without food in their system any longer than they have to be. And make sure enough blood is drawn in case more test need to be done.

I doc usually knows what they are talking about. Op might not have passed out purely from fasting?

If OP goes really early fasting won't cause problems. You fast for 12 hours going to bed at 8 and waking at 8, fast for longer if you are being put under for surgery. A1C cannot be done unless you fast. And a 3 hour diabetes test requires fasting then the sugar drink over the long period. You eat and you won't get a correct answer from the labs, or with surgery you can vomit then aspirate, stop breathing and have sever brain damage or death. Passing out they can help death from blood acidosis they can't fix.

A1C can be done while you aren't fasting, because it is testing what your levels have been the last 120 days or so.

It's actually ok to ask for qualifications, just be sincere and not a dick about it, if it's brought up.

I think you might not want to comment on a doctor's decision without knowing anything about medicine (which I'm inferring based on your comment).. if you did know anything, you'd know a hypoglycemic state is needed to run a myriad of tests in order to determine how the body is functioning in a state in which no outside factors are influencing the natural functioning. This has nothing to do with trying to cause pain or discomfort to the patient or anything like that, indeed there's an oath taken to do no harm to the patients.

21- Yeah, but one single day of fasting really shouldn't put the OP'S levels that low. If nothing else that might actually tell the Dr something about the OP. And might even help give him more answers before making a diagnosis. You're absolutely right though, the Dr's intentions here are good and he is trying to help the OP; not harm her.

....How is telling the OP the Dr isn't trying to hurt them a bad thing, exactly?

I'm not sure why your comment got so many down-votes #53. It seemed relatively insightful and intent upon continuing a logical analysis of OP's situation. There are many odd people in this world, I suppose.

I don't know why either, and you've been downvoted, 59 just for wondering it! I have to say I'm kinda confused.

If OP is diabetic, it would make them very low.

I hate when people say "*a* myriad"

Yeah, about your comment.

If that were the case, he'd be losing patients left and right. Wouldn't make sense to put himself out of commission.

Yeah, that makes me think the OP might be diabetic or hypoglycemic. But you're right, a piece of sugary gum will help bring the levels up a tiny bit. Or even sucking on a piece of really sweet candy-but not swallowing it.

Eating sugary candy, or even just sucking on it and spitting it out, or chewing gum, can mess up the test. People need to remember while fasting for blood work to keep drinking water, because not drinking water while you are fasting is what causes most of the problems.

I want to put my two cents in this thread of conversation. First, there is no such thing as "you're blood sugar shouldn't have dropped so low from FASTING FOR ONE DAY". Sugar is the main energy of the body and the brain. Some people do suffer from hyperglycemia which makes your body burn sugar faster than normal. I'm hyperglycemic and if I don't have my three course meals I begin to develop syncope symptoms. I start getting hot flashes, i start to sweat profusely, the color in my skin and lips blend together to form a pastel color, I get light headed, i get nauseous, my limps begin to shake, etc. This happens every time I skip a meal, so I'm not surprised she passed out from fasting. Lastly, digestion begins at the mouth.

I want to put my two cents in this thread of conversation. First, there is no such thing as "you're blood sugar shouldn't have dropped so low from FASTING FOR ONE DAY". Sugar is the main energy of the body and the brain. Some people do suffer from hyperglycemia which makes your body burn sugar faster than normal. I'm hyperglycemic and if I don't have my three course meals I begin to develop syncope symptoms. I start getting hot flashes, i start to sweat profusely, the color in my skin and lips blend together to form a pastel color, I get light headed, i get nauseous, my limps begin to shake, etc. This happens every time I skip a meal, so I'm not surprised she passed out from fasting. Lastly, digestion begins at the mouth.

I want to put my two cents in this thread of conversation. First, there is no such thing as "you're blood sugar shouldn't have dropped so low from FASTING FOR ONE DAY". Sugar is the main energy of the body and the brain. Some people do suffer from hyperglycemia which makes your body burn sugar faster than normal. I'm hyperglycemic and if I don't have my three course meals I begin to develop syncope symptoms. I start getting hot flashes, i start to sweat profusely, the color in my skin and lips blend together to form a pastel color, I get light headed, i get nauseous, my limps begin to shake, etc. This happens every time I skip a meal, so I'm not surprised she passed out from fasting. Lastly, digestion begins at the mouth.

Couple things here. Firstly, yes, glucose is the primary (but not sole) energy source of the body, however, glycogenolysis, beta oxidation and gluconeogenesis (to name a few) all provide energy sources for the body, including glucose or a product of the catabolism of glucose. Secondly, hyperglycemia absolutely does not indicate what you said. Hyperglycemia deals with high blood sugar levels due to just eating, decreased insulin, decreased sensitivity of the insulin receptor and perhaps something unusual like a glucagon secreting tumor from pancreatic alpha islet cells. Lastly, oral digestion is so minimum and insignificant that clinically it does not matter (ie, breaking down a few alpha 1-4 glycosidic bonds of carbohydrates by salivary amylase really doesn't do much).

I think I just felt my head explode

You're thinking of hypoglycemia, 33. Hyperglycemia is something entirely different.

#33: have you ever heard of a fasting blood test? It's something that's done for blood sugar and cholesterol, among other tests. Also, your statement of the body can't live without sugar, is really stupid. I, like many many others, live a ketogenic life. Meaning, I do not take in any sugars. Only traces of complex, natural carbs (such as from dairy, but very small amounts). The body can most definitely survive without any sugar, it's called ketosis. Now, if OP was a person who ate very sugary foods constantly, and had to fast for more than 12 hours, she could've had a sugar crash, which could've caused her symptoms. OP would recover fine, and despite some palpitations, shakiness and dizziness, she'd live to see another day. OP maybe this is a sign that you should change your eating habits? Good luck, ride out the fasting, it will be over soon.

47..there is sugar in dairy, there is sugar in bread, there is sugar in many things. I bet you eat more sugar than you think.

The internet: where people who don't know what they're talking about pretend to know what they're talking about.

#47: I'm actually quite aware of that. I have a small amount of cheese daily, around 1-2 oz, but otherwise no processed food. No breads, pastas, rice, nothing. Only protein (fresh meats, eggs, fresh seafood) which I prepare myself, and non-starchy vegetables. My total carbs are kept below 25 grams daily. It's called ketosis. And I feel better than I have in years. The liver basically flips a switch to use fat and protein for energy, instead of carbs & sugar. That being said, i still find it hard to believe that OP had this dizzy spell after a short fast. Maybe OP has an underlying condition, which needs more fasting blood tests to be performed. Hopefully OP can figure it out soon.