Which chemical is most harmful to the human body?

Question

If you were to rate 1-4, 1 being the worst and 4 the least, how would you rate the following chemcials as posing the greaest threat upon entering the human body.

Formaldehyde

Aluminum

Phenoxyethanol (anti-freeze)

Mercury

Answer 1

This is an unanswerable question because it will all depend on the concentration of the toxin as it enters the human body.

The most harmful would be the one in the greatest concentration. For example, if you were ingesting grams of aluminum and picograms of mercury, the aluminum would be more toxic.

Answer 2

1: mercury, without a doubt

2: I'd say formaldehyde

3: aluminium, even if it can cause problems long-term

4: phenoxyethanol. This is actually used in some vaccines.