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Is it normal for eyes to tear up during a bowel movement?

This Premium Q&A, reviewed and published, features a real conversation between an iCliniq user and a physician.

Patient's Query

Hello doctor,

Every time I use the bathroom, my eyes water up, and it is almost like I am crying, but it does not hurt whatsoever when I use the bathroom. But my eyes still tear up. Why? Is this the norm?

Kindly help

Answered by Dr. Georges Hany Kozah

Education:

MD

Professional Bio:

Dr. Georges Hany Kozah is an experienced Lebanese Gynecologist with an MD from The Lebanese University Faculty of Medical Sciences (2016) and a Fellowship completed in 2022. Specializing in high-risk obstetrics, advanced ultrasound, oncology, colposcopy, and hysteroscopy, he combines expertise with a patient-centered approach. Passionate about women’s health, Dr. Kozah strives for excellence and optimal outcomes in collaborative, innovative care.

This doctor is not available for online consultations on the platform anymore.

Hello,

Welcome to icliniq.com.

Yes, this is normal and happens to many people. The reason your eyes water when you use the bathroom, especially during a bowel movement, is due to the vagus nerve. This nerve runs from your brain down to your digestive system and controls functions such as heart rate, digestion, and even tear production. When you strain during a bowel movement, the vagus nerve is stimulated, which can trigger reflex tearing, making your eyes water as if you are crying. This same nerve is also responsible for causing lightheadedness in some people after a bowel movement.

If you do not experience pain, discomfort, or other concerning symptoms, this reaction is simply a normal reflex. However, if you feel dizzy or weak or notice any other unusual symptoms when using the bathroom, it may be a good idea to consult a doctor to rule out any vagus nerve sensitivity issues. While it may seem strange, it is generally a harmless bodily response. Have you always experienced this, or is it a new occurrence?

I hope this helps.

Thank you.

Medically reviewed by iCliniq medical review team
Published At April 29, 2025
Reviewed At May 7, 2025

Education:

MD

Professional Bio:

Dr. Georges Hany Kozah is an experienced Lebanese Gynecologist with an MD from The Lebanese University Faculty of Medical Sciences (2016) and a Fellowship completed in 2022. Specializing in high-risk obstetrics, advanced ultrasound, oncology, colposcopy, and hysteroscopy, he combines expertise with a patient-centered approach. Passionate about women’s health, Dr. Kozah strives for excellence and optimal outcomes in collaborative, innovative care.

This doctor is not available for online consultations on the platform anymore.

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Companion

Vagus Nerve Reflex: Eyes Tearing During Bowel Movement Companion

How it works

It can be surprising to find your eyes watering during a bowel movement. This section explains why this happens and what it means for your health.

1

Vagus
Nerve

2

Digestion
Connection

3

Straining
Effect

4

Reflex
Tearing

5

Other
Responses

6

Seek
Care

This information is based on general medical guidance. It is not a substitute for professional medical advice; consult a qualified clinician.

Always consult a doctor before taking medication; self-medication carries serious health risks. Take exact prescribed doses, and never start, change, or stop treatment without medical supervision.

Education:

MD

Professional Bio:

Dr. Georges Hany Kozah is an experienced Lebanese Gynecologist with an MD from The Lebanese University Faculty of Medical Sciences (2016) and a Fellowship completed in 2022. Specializing in high-risk obstetrics, advanced ultrasound, oncology, colposcopy, and hysteroscopy, he combines expertise with a patient-centered approach. Passionate about women’s health, Dr. Kozah strives for excellence and optimal outcomes in collaborative, innovative care.

This doctor is not available for online consultations on the platform anymore.

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