Provide your best answer for the following question. Give ONLY the answer, no other words or explanation.
For example:

Answer: <most likely answer, as short as possible; not a complete sentence, just the answer!>.

The question is: what is the proportionality of a rise in bacteria content and human health?
they are inversely proportional
There is no simple proportionality. Human health can be affected in various ways by bacteria, some positive and some negative.