Jacob Liberman, who has doctorates in both optometry and vision science, says that the people who live on Earth evolved to thrive under the light put forth by our sun. He says, therefore, that we potentially harm ourselves when we hide from sunlight. In Light: Medicine Of The Future: How We Can Use It To Heal Ourselves Now, he explains how to utilize the therapeutic benefits of light. Dr. Liberman says that "light is the basic component from which all life originates, develops, heals, and evolves." Everything that humans do is affected in some way by light. Light has been used for healing since the time of ancient Egypt. Modern scientists began recognizing the benefits of light therapy in the late 1700's. Although many people believe the ultraviolet (UV) light is harmful, Dr. Liberman maintains our bodies need at least a small amount of UV light in order to function properly. He cites studies which indicate that, due to all the ways in which we block sunlight from our lives, including wearing sunglasses designed to block out UV rays, "it is possible that we are unknowingly contributing to the increased incidence of blindness and eye disease in this country." Dr. Liberman does warn against looking at the sun directly, or exposing ourselves to it between 10:00 a.m. and 2:00 p.m., but emphasizes that light is a nutrient for the body. He says people need to be outside in natural light, without sunglasses or sun block, for a minimum of one hour a day. He warns that warm-white and cool-white fluorescents "should absolutely be avoided." People who cannot get outside regularly need to equip their work areas with full-spectrum light fixtures. Syntonics is the name given to light therapy, which involves utilizing specific colors for healing specific ailments. Dr. Liberman discusses its benefits in treating vision problems, seasonal affective disorder (SAD), cancer, and learning disabilities. He says that "as we continue to discover and understand the role that light plays in our lives, its use as both a therapeutic and preventive tool will become more evident." Because each individual is different, Light: Medicine of the Future doesn't get into prescribing particular colors for each potential illness. It is an invaluable reference, however, for all those interested in natural healing. Extensive appendices provide sources of supplies and a listing of light therapy practitioners.
Sandra I. Smith, Reviewer