U.S. doctors online nowAsk doctors free
South Africa
A 22-year-old male asked:

Can the vagal nerve or vagal response be overactive or malfunction? because whenever i eat anything i get very lightheaded, faintness, pale and shaky.

1 doctor answer3 doctors weighed in
Dr. Robert Knox
ENT and Head and Neck Surgery 39 years experience
Vagal Nerve Problems: Yes, an exaggerate vagal nerve response can contribute to dizziness. Probably, this happens when the vagal nerve causes the heart rate to slow down. If this happens any more often than rarely, go see your doctor. You need to exclude irregular heart rate rate, fluctuation in blood pressure, and sudden rising or falling blood sugar - three reasons for dizziness around meals.
Created for people with ongoing healthcare needs but benefits everyone.
Last updated Jan 24, 2021


Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.