What else besides diabetes or hyperglycemia would make you become nauseated after eating sweets?

If you only had simple fasting sugar blood tests, we don’t really know for sure what happens when you take in a lot of sugar. Maybe your blood sugar spikes more an usual, or your insulin levels are a little screwy. But, most likely you are completely normal. You might have some sort of wiring in your brain that causes you to be nauseas, or possibly the lining of your stomach is sensitive to sweets. I sometimes get pain in my stomach after a lot of sugar, my stomach feels irritated and inflammed.

You would not experience nausea after eating sweets if you were diabetic or hypoglycemic.

It just sounds like you need to limit your sweets if you get that reaction.

Have you ever been tested for allergies? Maybe you have a mild allergy to a common thing in sweets, maybe a dye or even sugar itself.

My wife did this after eating Krispy Kreme doughnuts.

Then, we discovered she was pregnant.

What type of sweets? Are they also high-fat, by any chance? Nausea after consuming a lot of fatty food is a sign that something may be wrong with the gallbladder, such as the presence of gallstones.

I am in good health, have none of the medical problems mentioned in this thread, but I have a low tolerance for sugar. Ever since I was a child, I feel vaguely nauseous and just not good at all if I eat too much high sugar food.

Have you ever been tested for insulin resistance? That is how I feel when I eat sugar and I have insulin resistance. I have felt this way since about the age of 15 whenever I ate sugar or drank anything with sugar in it, this is why when I was about that age I switched to diet drinks. With insulin resistance your body needs to make more insulin in order to break down the sugars in food.

Only extreme cases of hyperglycemia have the capability to cause strong bodily reactions like nausea and dizziness. Eating something sugary on an empty stomach will not cause such kind of hyperglycemia, unless you’re a diabetic with already elevated blood sugar levels.

My guess is that it’s related to how your stomach reacts to this kind of food.

@john65pennington Well, I am certainly not pregnant (ha-ha). I have only had this problem since having gestational diabetes in 1983. As a kid, I could wolf all the sugar I wanted. I do, definitely, stay away from sweets, especially on an empty stomach. @SmashTheState and @creative1 , both of your answers sound possible. Maybe I should be tested. Gallbladder problems run in my family, but I didn’t think of that because I don’t have any pain and don’t get sick on anything else that I eat. Donuts and baked goodies do it to me more than, say, a candy bar. I am surprised that my doctor didn’t do more extensive testing when I told her the symptoms. All she did was test me for diabetes, said it wasn’t that, and sent me home!