The article is misrepresenting what Dr. Carson says in the video.
I can’t watch the whole video, but just within the first 12 minutes...
He says his symptoms went away, but he didn’t say the product cured him.
As a matter of fact, around 11:08, he says:
>>> “Now, some people have concluded that I was cured without surgery and that I was just cured by the glyconutrients. Maybe it would’ve happened; maybe it would not have. But I do not advocate abandoning traditional medical cures that have been shown to work. What I would, however, advocate is using natural products to supplement what’s done by traditional medicine. The two things do not have to be adversarial. In fact, they can be really extremely complementary.” <<<
I guess someone called him on it, because in at least one of the speeches I saw, he only mentioned the Mannatech product. Claiming cures for autism, down syndrome and cancer are why the company has been sued and has paid out millions in damage suits.