As Frank Murray discusses in Vitamin A and Beta-Carotene are Miracle workers, the two inexpensive vitamins can jump-start the immune system, thereby protecting us against HIV/AIDS, measles, malaria, cancer, diarrhea, blindness, and other life-threatening illness.
Like vitamins D, E, and K, vitamin A is a fat-soluble vitamin that is stored in the liver, where it becomes a valuable reserve against deficiencies. Few reports in the literature show that it is harmful. Beta-Carotene is pro-vitamin A and is harmless.
Pregnant women should have their vitamin A intake, from foods and supplements, monitored by their doctor so as not to harm the fetus, whose liver is quite small. Children should also have their vitamin A intake evaluated. However, doctors can save children with measles with 100,000 to 200,000 IU of the vitamins in two days.
As Richard A. Passwater, Ph. D., points out in the Foreword, "the teachings of this book can save the lives of millions worldwide."