unproven

But Oz is a controversial figure in the medical world whose television appearances have drawn criticism from fellow physicians who say he backs questionable alternative medicine and unproven weight loss products.

He was criticised during Senate hearings in 2014 for endorsing unproven pills that he said would “literally flush fat from your system” and “push fat from your belly”.

And unless they plan to rely entirely upon unproven prospects, they’ll need to bolster their depth.

Why do we jeopardize the mental health of our children to gain speculative, but unproven, advantages from active-shooter drills?

The proposal passed despite persistent objections from environmentalists who argued that storing industrial carbon emissions underground is unproven and could endanger nearby communities if there are leaks.