2026-06-26
Colonoscopy 3-Day Diet Guide: Sharing a Tearful 3-Day Meal Plan Surviving on Eggs and Tofu
A comprehensive 3-day diet guide for colonoscopy preparation, featuring a meal plan focused on eggs and tofu to ensure a successful examination.


Hello,
This is Geomjin Gaja.
Even though it is an annual health checkup,
I think there are many people who
search for information again because
they cannot remember what they did last year.
I am definitely one of them.
Unlike a gastroscopy, a colonoscopy
is different in that it requires a process
beyond simply fasting.
Because you have to be careful about what you eat before a colonoscopy,
aside from the hassle, it feels like
there is really nothing left to eat.
Let us briefly look at
how you should manage your meals
before undergoing a colonoscopy!
Do I need to prepare from 3 days prior? Let us go for a checkup!

While there are foods you can eat during this diet,
there are also foods you must strictly avoid.
When I used to work at a hospital,
a completely different diet was specifically
prepared and served to patients
who were scheduled for a colonoscopy.

I vividly remember providing
eggs and tofu as protein sources,
alternating between the two
and varying the cooking methods.

You must filter out any seeds
or finely chopped ingredients from your food...

A highly recommended meal by nutritionists
is egg soup, which allows you to eat deliciously
while still fulfilling your nutritional needs.
Normally, I enjoy eating egg soup
with finely chopped green onions,
but if your colonoscopy date is approaching,
you must boldly leave the green onions out.

The diet starts 3 days beforehand,
and the day before the procedure, you should only
consume white porridge or thin rice gruel.
Hang in there just a little longer so you can succeed with your endoscopy...!

If you do not follow the diet properly,
the chances of needing a re-examination increase...
Make sure to follow it strictly so you can get it done perfectly in one go.

The success rate depends heavily on this diet,
so there is absolutely no reason not to do it.

Geomjin Gaja cheers for
your successful endoscopy examination!

Frequently Asked Questions
When should I start managing my diet for a colonoscopy?
You should start managing your diet 3 days before the examination. Unlike a gastroscopy, a colonoscopy requires more than just fasting; thorough dietary management, such as avoiding seeds and indigestible foods, is necessary starting 3 days prior to ensure the bowel is completely clean.
What foods can I eat before a colonoscopy?
Soft, easily digestible protein foods like eggs and tofu are recommended. Consuming them prepared in a way that leaves no residue in the intestines, such as clear egg drop soup without green onions or other solid ingredients, will help with the examination.
What foods should I avoid before the examination?
You should avoid finely chopped ingredients like seeds or green onions. These foods can remain undigested and stick to the intestinal wall, obstructing the endoscope's view or being mistaken for lesions, so you must stop consuming them 3 days prior.
How should I eat the day before the examination?
The day before, you should only consume white porridge and gruel. This is the final step to completely empty the bowels, so it's important to eat soft, liquid foods without side dishes to increase the success rate of the colonoscopy.
What happens if I don't manage my diet properly?
If the bowel is not properly emptied, the likelihood of needing a re-examination is very high. Accurate observation is impossible if food residue remains in the intestines, so despite the inconvenience, you must strictly follow the guided diet starting 3 days prior.