I'm fairly new to this type of diet, but have been on the Zone Diet
for several weeks with excellent results in terms of weight loss
and energy level.

I noticed a post (sorry I have deleted it so cannot quote it)
mentioning that Barry Sears' original book "The Zone" is now out of
date in some respects. I am sure that must be true, given that the
book was published in 1995.

I'm curious though to know in what respects the information in it
has become outdated.

Can anyone offer information about this?

Peter