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A 26-year-old male asked:

I feel very tired for hours after ingestion sugar (even just 10g). i've tested myself multiple times for diabetes, but i don't have it. what could it be? thank you

2 doctor answers2 doctors weighed in
Dr. Frank Kuitems
Internal Medicine 37 years experience
Hypoglycemia : this could be low blood sugar from functional reactive hypoglycemia see a doctor and get tested or you could call Healthtap get a video consult to get tested at a lab
Dr. Donald Colantino
Internal Medicine 62 years experience
Reactive hypoglycemi: Some people develop reactive hypoglycemia after eating sugar products as their body secretes too much insulin for them when their blood sugar rises and instead of bringing their blood sugar to normal, the sugar drops too low causing fatigue and at times weakness. A 4-6 hr glucose tolerance test Is diagnostic.

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Last updated Oct 27, 2015

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