Todd , you wrote:
>Also, the ER4YT program has two distinct
>components.  One is the lectin theory, the other is the metabolic
>type theory.  According to the metabolic type theory, for
>example, type As do better on vegetarian diets, even though the
>lectin theory doesn't require this at all; it just requires the
>avoidance of certain lectins.  D'Adamo treats it as a package
>deal, but from reading posts at his website, *many* people have
>had trouble with the metabolic type part of the plan.  They do
>better on more moderate/restricted carb implementations.
>
>Anyway, I'm pretty sure the metabolic type part of his theory is
>all wrong but I still wonder about the lectins.  For example, I
>am a type A and as I've mentioned before, I tend to get psoriasis
>if I eat tomatoes or oranges, both of which are considered
>acceptable on Neanderthin.  According to D'Adamo, however, both
>of them are foods that I should avoid. I avoid them and my
>psoriasis is gone, for the first time in about 30 years.
>Obviously this is an isolated case, and it could be that there
>are other variables that I'm not even noticing.
>
>Who knows, maybe we'll figure something out.
>
Thank you, Todd, you have solved my conundrum!

I had not really identified the two major components of the ER4YT theory.
(Although it does sound a bit familiar- you may have said it before and it
never sank in...)

Now that you have pointed it out, it seems so obvious!

There is merit in the lectin theory. D'Adamo does have a very high success
rate, and certainly does deserve his accolades. It is the metabolism
portion that is off the mark at times.

I have benefited greatly from avoiding lectins harmful to my blood type, as
have many others. I have been following a modified paleo low-carb version
of ER4YT for a year and a half. I have been actively participating on the
ER4YT boards for that long as well.

Being  an O blood type, I just happen to have a fast oxidizing metabolism.
Because my metabolism does fit the "O" diet model, it has worked for me.
However, there are O's with an Agriculturalist (slow oxidization)
metabolism and A's with a Hunter-Gatherer (fast oxidization)  metabolism,
and for them, the diet has not worked (unless  macro nutrient ratios are
modified and purine intake monitored). These are the exceptions, but
notable ones.

More times than not, the metabolism does follow blood type archetype, but
not always.

I think we gain a lot of insight from the lectin research, but need to
seperate out the metabolism recommendations and view them as possibilities,
rather than givens.