Of course, you should be aware he peddles Vitamin C for bucks.
This is a clear conflict of interest.
The article is not precise, and as he is a retired physician, he doesn’t seem too concerned about keeping up to date.
There has been a backlash over the article regarding the sloppy science, which has even been dubbed as being propaganda.
To me, him using a newspaper column to tout a supplement he sells that should have prevented such an article from being published in the first place. He may be a doctor, but doctors can have vested interests just like everyone else…