It’s real.
A lot of people say they are hypoglycemic or they will say they feel like their sugar is low if they haven’t eaten, but the truth is that is extremely unlikely in people who don’t have hypoglycemia and eat a normal diet and are normal weight. The average person has their sugar stay in normal range even if they miss a few meals, their body releases sugar from storage.
My husband is annoying, grouchy, and short tempered when he is hungry and he is in total denial about it, which I find frustrating. I seriously doubt he has a sugar problem though. HIs fasting glucose is always normal.
The syrup story doesn’t make much sense. I guess maybe she put that together with people who say if you eat carbs or sweets in the morning you get a sugar high and then a crash, but again, most likely she does not have hypoglycemia. She can get her sugar tested and find out. You can buy a test kit in the drug store.