This is a deep, theological question that has confounded thinkers for centuries.  Just kidding.

Adam and Eve had a digestive system. The fall of man did not recreate our bodies with a large and small intestine.  Adam and Eve went to the bathroom before and after sin. They had to.  Going potty is not a sin! It’s a natural response to food intake.

As spirits after death, before we have been reunited with our bodies, the answer is no, we do not go to the bathroom while we wait for our resurrected bodies.

I declare to you, brothers, that flesh and blood cannot inherit the kingdom of God, nor does the perishable inherit the imperishable. Listen, I tell you a mystery: We will not all sleep, but we will all be changed—in a flash, in the twinkling of an eye, at the last trumpet. For the trumpet will sound, the dead will be raised imperishable, and we will be changed. For the perishable must clothe itself with the imperishable, and the mortal with immortality. 1 Corinthians 15:50-53

However, after the resurrection of our bodies, then it appears that yes we would have to go the bathroom. It seems disgusting, but remember our digestive tracts will work perfectly—no sickness, no constipation, no…well, do I have to say more?

We know we eat in heaven.  There are many references to fruit trees in heaven.  Fruit goes right through us…

There is one glimmer of hope.  If our perfect, resurrected bodies burn energy at a 100% rate, then maybe there are no bathrooms in heaven.  We won’t over eat (no gluttony) and consume exactly as much as we need to get through the day.

Or maybe God just makes it all supernaturally disappear.  Let’s hope so.

There will be animals in heaven since there were animals in the world Adam inhabited – the first perfect earth.  Will they have digestive systems too?  They should.

So watch where you step?

God made us this way and there is no mistake.  Going to the bathroom is perfectly natural though maybe there’s a way it will all go away.