Nutrition
Reactive Hypoglycemia Versus Fasting Low Distinction
Reactive hypoglycemia versus fasting low distinction separates post-meal crashes from true fasting or overnight lows—timing and meal content clarify which pattern you have.
Reactive hypoglycemia versus fasting low distinction separates afternoon crashes one to four hours after meals from true fasting lows before breakfast or overnight on CGM. Fasting lows involve insulin, alcohol, or medication factors reactive meals do not explain.
Somogyi-style rebounds add a third overnight pattern. Treating a post-lunch crash with bedtime snacks misaims the fix.
Log timing, last meal content, and glucose when safe. Clinicians order structured testing when patterns blur.
Common questions
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Is reactive hypoglycemia the same as low blood sugar overnight?
No—reactive patterns usually follow meals one to four hours later. Fasting or overnight lows have different causes and need clinician review, especially if you use glucose-lowering medications.
Related terms
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