This section of the book is from the "How and When to Be Your Own Doctor" book, by Dr. Isabelle A. Moser with Steve Solomon, published in 1997.
From The Hygienic Dictionary
Food .  Life is a tragedy of nutrition. In food lies 99.99% of the causes of all diseases and imperfect health of any kind.Prof. Arnold Ehret, Mucusless Diet Healing System.
Recently, my younger (adult) daughter asked my advice choosing between a root canal or having a bridge made. This led to a discussion of her eating habits in general. Defending her currently less-than-optimum diet against my gentle criticism, she threw me a tough riposte. "Why," she asked, when I was raised so perfectly as a child, "when I ate only Organic food until I was ten and old enough to make you send me to public school where I could eat those lousy school lunches" (her unfeeling, heartless mother home-schooled her), "why even at that young age, (before she spent her adolescent rebellion eating junk food) why at that point did I still have a mouthful of cavities?" And she did. At age ten my daughter needed about ten fillings.
This beautiful daughter of a practicing naturopath had received what, at the time, I considered virtually perfect nutrition. She suckled hugely at her mother's abundant breast until age two. During this time her mother ate a natural foods diet. After weaning my daughter got only whole grains, a little fresh goat's milk from my goat, fruits and lots of Organic vegetables. I started my spa when my daughter was about five years old and from that point she was, like it or not, a raw fooder. And all that raw food was Organic and much of it from Great Oaks School's huge vegetable garden.
For my daughter to develop cavities on this diet is reminiscent of Woody Allen's joke in his movie "Sleeper." Do you recall this one, made about 1973? The plot is a take off on Rip Van Winkle. Woody goes into the hospital for minor surgery. Unexpectedly he expires on the operating table and his body is frozen in hopes that someday he can be revived. One hundred and fifty years later he is revived.
The priceless scene I always think of takes place in his hospital room immediately after he comes to consciousness. The doctor in charge of his case is explaining to Woody what has happened. Woody refuses to believe he died and was frozen, asserting that the whole story is a put on. Woody insists that the 'doctor' is clearly an actor hired by his friends! It absolutely can't be the year 2123. 'Oh, but it really is 2123,' insists the doctor. 'And it is no put on by his friends; all his friends are long dead; Woody knows no one at all in 2123 and had better prepare himself to start a new life.'
Woody still insists it is a put on. "I had a healthfood store," he says, "and all my friends ate brown rice. They can't be dead!"
And my perfectly nourished daughter couldn't have developed cavities! But she did. And if she cheated on her perfect diet, bad food could not have amounted to more than two percent of her total caloric intake from birth to age ten. I was a responsible mom and I made sure she ate right! Now my daughter was demanding to know why she had tooth decay. Fortunately, I now know the answer. The answer is rather complex, but I can give a simplified explanation.