Whether or not the cardboard in a bun news story in China was real or not, I am fascinated with how potentially harmful a diet comprising of corrugated cardboard subsitituted for protein filling would have on a long term basis. Though this thought experiment may not be on the level of Schrödinger's cat; perhaps we can discuss how adaptive the human body can be.

Let's suppose that the cardboard in question (as depicted in the news story) was old cardboard that had been laying around and exposed to the elements. Therefore, the cardboard would be in various states of decomposition and may contain ink, or other metals (such as staples) and possibly glue.

Let's also suppose that the bun itself is consistent with a typical bun (ie flour and water).

And if the bun is steamed (presumably this will kill most bacteria in the cardboard)

Then should the harmful factors that need to be considered are the ink, the metal, and the glue?

I am in no way condoning the substitution of ingredients but is there any literature to support that what levels of ink/metals/glue would be toxic or carcinogenic?

thanks

sw

scary..... makes me think of where our food comes from....

I am not sure there are studies that looked at those specific factors but if you find one, do share!

Not sure about ink or glue toxicity levels but metals would be a choking hazard and could kill you regardless of any toxic thresholds unless, you are referring to heavy metals like mercury & lead.

Saltywet, are you trying to add more fiber to your diet by choosing cardboard?