Well, here's the entry about him in The Skeptic's Dictionary that talks about this and some of the other medical "controversies" he champions. People can read this and see what sort of "cred" he has:
http://www.skepdic.com/blaylock.html
Per Blaylock, among other things:
Vaccines cause not only autism, but also Parkinson's and ALS.
Dental filings are poisonous
...as is fluoridated water,
...and MSG,
...and aluminum cookware.
Aspartame is a neurotoxin.
He can prevent/cure all of the harm from such things with his "detoxification" therapies he promotes under the label
"Brain Repair Formula."(*)
While the medical community isn't too keen on what Blaylock's selling, medical expert and HBO commentator Bill Maher gives him two big "thumbs up!"
* = Isn't it funny that the profit motives for Big Pharma and doctors are used as "Exhibit A" by anti-vaxxers to impeach what they say or promote, but when it comes to "brave maverick doctors" like Blaylock that notion gets
amazingly overlooked?!?!?!