[prepend]

It’s not reasonable to conclude that because moderate alcohol causes an effect that less than that causes a diminished effect.

You need evidence, or at least some logical basis, to make a claim or believe such a thing.

You can review the literature to find something. Typically is a paper is publishing about moderate levels causing an effect they will cite or be cited by other studies showing effects from other levels.

There are many things in nature that are harmless at some level and become harmful at another level. And there’s no negative effect whatsoever from the appropriate level.