I think the acid/alkaline
idea may be a red herring. However, in general plant foods are alkaline
and animal foods acid. A vegan diet is probably cancer protective
but not necessarily by virtue of its alkalinity. Rather I think it's
due to the dozen or so cancer protective substances present in plant
foods but not in animal foods, and the absence of some carcinogens
present in animal food but not in plant food. (See: http://www.vegsource.com/harris/cancer_vegdiet.htm)
I have tried
food combining and noticed no effect other than a further social
complication of my vegan eating pattern. It may be helpful for some
people but I think that all worthwhile foods contain fat, protein,
and carbohydrate so the attempt to consume the three at separate
meals is hard to justify scientifically.
There are some
obviously bad combos like orange juice and beans, and Herbert Shelton,
D.C. was probably wise in saying of melons: "Eat them alone
or leave them alone."
In summary I
think the vegan diet is a health promoter but don't think acid/alkaline
or food combining theories explain why it is.
Harris MD received a degree in physics from the University of
California Berkeley, where he earned Phi Beta Kappa honors. He received
his degree in medicine from the University of California at San
Francisco, and received his postgraduate training at San Diego County
Hospital. He holds a Medical License in the State of Hawaii. He
has been an Emergency Department physican since 1963, and the Director
of the Kaiser Permanente Vegan Lifestyle Clinic on Oahu until his
retirement in 1998. Dr. Harris is the author of The Scientific Basis
In addition, he was the 1950 Big Ten Trampoline Champion, is
an accomplished hangglider and commercial pilot, and at age 70 became
a skydiver with 108 jumps to date. Dr. Harris has been vegetarian
since 1950, and vegan since 1963.