A word that describes a process that can be both good and bad

I am searching for a word that can describe an object or process as having both bad and good elements.

I realize this is a repeat of this previous question, but I do not believe the suggestions answer my question;

• Egregious, the proposed answer by the OP, is not a common enough word (anyone I have asked has had to look it up), nor does it mean precisely what I'm after,
• Sick is a word that can be used in both good and bad contexts. It does not actually mean "both good and bad".

The context I am working is biological, specifically cognitive impairment (such as dementia). In a publication I am working on currently, I would like to describe the role of inflammation as having both good and bad roles (depending on the situation).

I can think of possible sayings that might apply, for example "swings and roundabouts" or "bitter-sweet", but again these do not seem formal enough.

Is there a word that fits the context? "Inflammation is a double-edged sword..." but more scientifically!

How about dualistic?

As in the Oxford Dictionary:

Theology .

a. the doctrine that there are two independent divine beings or eternal principles, one good and the other evil.

Seems appropriate to say that inflammation has a dualistic role.

How about agathocacological?

agathoˌkakoˈlogical, adj. Etymology: < Greek ἀγαθό-ς good + κακό-ς bad + -logical comb. form. nonce-wd.

Composed of good and evil.

or from WordNik agathocacological

Perhaps ambivalent would be of some use; it seems like a reasonable extension of the second meaning:-

Psychology . of or pertaining to the coexistence within an individual of positive and negative feelings toward the same person, object, or action, simultaneously drawing him or her in opposite directions.

Edit I've just noticed this was also suggested by Karthik at the previous question.

How about twofold:

: having two parts or aspects

The idiom cuts both ways may be a better fit:

to have both advantages and disadvantages