I have been personally afflicted with acne for over 45 years.
My case was very severe.
For the first 17 years I had no answers; I found no remedies or
over-the-counter medications that would prevent new acne.
At age 30 I began a serious search for answers with the help of
a dermatologist.
The positive effect of antibiotics on lessening the severity of
new outbreaks proved bacteria were part of the cause.
By varying the use of antibiotics and recording everything I ate
and drank, I was able to correlate a pattern between acne outbreaks
and certain foods.
I found my acne was caused by refined sugar in my diet.
I found I could avoid new acne by avoiding sugar-containing foods
and drinks.
The most significant finding was that new acne would result from
extremely small quantities of sugar intake, as little as 1/16
teaspoon (1/4 gram).
I developed a 2-week test I could use now and then to reconfirm the
effect of sugar on new acne.
The difficult part of controlling my acne was changing my diet and
disciplining myself to be constantly aware of the staggering number
of foods that contain sugar, many in very small hidden amounts.
A number of very positive side benefits resulted, such as acquiring
a rather healthful diet.