what you are probably are thinking of is fructose intolerance or (the weaker
and more probable form) fructose malabsorption.. but the reasons why people
don't like certain foods can of course be a lot more complex than that.

"Somehow during evolution the human body has learned to work in
unison with a large variety of phytochemicals."

Evolution is such a magnificent process!

Seed/fruit plants, which are immobile, evolved in concert with
animals (animal kingdom, that is) that move, for mutual benefit. The
plants that provided the maximum survival value to animals that ate
their fruits and therefore spread their seeds, in return for minimal
effort on their part, also survived best. It's truly natural that
fruits, then, should be of great value to us for nutrition.

A problem is that in the last few centuries, fruit has so much been
selected by people on the narrow basis of how little effort they have
to put into cultivating the plants that make them, rather than being
selected by plants that produce fruit that helps their eaters to
live. However, a lot of fruits are still pretty natural in this
respect - berries in particular for northern people like Juhana and
me.

I'm very cautious about a blanket statement, "doesn't like fruit",
given the immense variety of fruits there are that are available in
many fruit stores today (see http://sankey.ws/labels/index.html and
http://sankey.ws/livingfood.html for some examples). There is such a
tremendous variety of fruits available that I can't believe that
anyone wouldn't find a few they like.

I recommend caution when using Duke's data on the net. When I tried
to check out some of his fluoride data, ARS said he no longer works
for them and directed me to FNIC. FNIC in effect repudiated his data
as it applied to North America, their jurisdiction.