I have on many occasions, including this one, googled "refined carbohydrate" and I am not convinced that I have found anyone who means anything by it, let alone that a significant number of people mean the same thing by it.

Added: no, a lot of people do mean something: they mean "carbohydrate."

An ad homenim is an attempt to tarnish a person's position by criticizing the person.

Well you have certainly criticized me. Although you claim that it was done simply to "to explain to you why I'm not going to debate the subject with you," you said nothing about that in your earlier post. Here's what you said:

I have however-many years of reading your comments here and your barely-positive karma ratio to remind me that you will be drawing your own conclusions completely independently of someone else being able to back up their claims.

Besides your nasty tone, there was nothing in there about it being an explanation for why you did not want to have a discussion with me.

But by all means, take my response as a concession

I will -- it's pretty obvious why you keep trying to shift the exchange away from your earlier claim about the clarity of Taubes' position.

By the way, it's fascinating that you perceive a simple request for a definition as "debate." I haven't yet disputed that you have accurately summarized Taubes' position.