Full Spectrum LightingLarry Weber, Naturallighting.com Copyright© 2002-2004 http:www.naturallighting.com Toll Free - 888.900.6830 email: sales@naturallighting.com
All life on our planet has adapted to and is nourished by light from
sun and sky, a critical balance of visible color and invisible ultraviolet wavelengths. Over
ages, virtually every living thing developed with
help of Nature's Full Spectrum. Today most people don't get enough sunlight because they spend so much time indoors, and most lack
understanding of lighting and that there is significant difference is type, and quality of lighting available. Most lighting in homes, schools, offices, factories, stores, is so bad that many health disorders can be traced to
lack of natural lighting. Natural sunlight and various forms of light therapy can help reestablish
body's natural rhythm (circadian rhythm -
body's inner clock) which controls timing of sleep, hormone production, body temperature, and other biological functions. Disturbances in this rhythm can lead to health problems such as depression (SAD - Seasonal Affective Disorder) and sleep disorders. Light therapy and
use of natural full spectrum lighting are becoming an integral treatment for many related health conditions.
How Light Therapy Works - As light enters
eyes, millions of light and color sensitive cells called photoreceptors convert
light into electrical impulses. These impulses travel along
optic nerve to
brain where they tripper
hypothalamus gland to send chemical messengers called neurotransmitters to regulate
automatic functions of body. The hypothalamus is part of
endocrine system whose secretions govern most bodily functions - blood pressure, body temperature, breathing, digestion, sexual function, moods, immune system, aging process, and circadian rhythm. Full spectrum lighting (containing all wavelengths) sparks
delicate impulses that regulate these functions and maintain health.
The Importance of Natural Sunlight - According to numerous studies, poor light poses a serious threat to health. Many firmly believe that
best light for maintaining health must contain
full wavelength spectrum found in natural sunlight. Most artificial (incandescent and standard fluorescent) lighting lacks
complete balanced spectrum of sunlight. The lack of
full spectrum interferes with
body's optimal absorption of nutrients, a condition known as "malillumination". Windows, windshields, eyeglasses, smog, and suntan lotions all filter out parts of
light spectrum and contribute to
problem. Most offices, even those with uncovered windows and
lights on, have a light level of only 500 lux (the international unit illumination) as compared to outdoor light, which has about 50,000 lux, or about 100 times more. Light levels for night shift workers are usually about 50 lux. We spend about 90% of our lives indoors, under inadequate lighting conditions, which can cause or worsen a range of health problems, including depression, heart disease, hypertension, depression, insomnia, premenstrual syndrome, migraines, and carbohydrate cravings, associated with metabolic imbalances. A ten-year epidemiological study conducted at johns Hopkins University Medical School in Baltimore, Maryland, showed that exposure to full spectrum light (including
ultraviolet frequency) is positively) related to
prevention of breast, colon, and rectal cancers. In Russia, a full spectrum lighting system was installed in factories where colds and sore throats had become commonplace among workers. This lowered
bacterial contamination of
air by 40 to 70 percent. Workers who did not receive
full spectrum light were absent twice as many days as those who did. Recent tests in classrooms, two using standard fluorescent lighting and two using full spectrum lights, indicated conclusively that students exposed to
full spectrum lighting had a marked diminishment of hyperactivity, less absenteeism, and higher academic achievement.
SAD (Seasonal Affective Disorder): Full spectrum light and bright light are effective treatments for Seasonal Affective Disorder (SAD). The symptoms of SAD are depression, excess sleeping and eating, withdrawn feeling, lowered sex drive, etc. Melatonin levels are found to be very high in-patients with SAD. Daily exposure to sunlight or full spectrum light has been known to eliminate SAD symptoms.
UV or Not to UV: That is
question: The term "ultraviolet" causes most people to think of harmful rays, cancer, cataracts, aging, and wrinkles. From sunglasses to suntan lotion, most of
UV is blocked or filtered out. Blocking all of
UV rays may severely weaken
body's defenses. There are strong indications that UV light through
eyes stimulates
immune system. Moderation is
key. There is no question that large amounts of UV are harmful, however, in trace amounts, it is very beneficial. Sunlight contains large amounts of UV in various wavelengths. Each wavelength is responsible for various things, such as tanning response in humans, activate synthesis of Vitamin D, and absorption of calcium and other minerals. Sun therapy was very popular in Europe at
turn of
century, and until
late 1930's. It was known as heliotherapy, named after
Greek God of
sun - Helios. By mid 1930's, sunbathing and UV therapy was most effective treatments for many infectious diseases such as: lupus, eczema, acne, herpes, rheumatoid arthritis, gout, cystics, anemia, colitis, kidney problems, etc. Then in 1938, penicillin was discovered, and world turned to pharmaceuticals, and drugs became big business. Sun therapy was then regarded as medical quackery. There is another side to
healing with light - and most do not know
tremendous health benefits from UV. UV light activates
synthesis of Vitamin D, which is a prerequisite for absorption of calcium and other minerals. UV light can lower blood pressure; can increase efficiency of
heart, can improve EKG readings and blood profiles; can reduce cholesterol; can increase
level of sex hormones (Vita-Lite has a balanced UV, and is used extensively for enhancing
mating and reproduction of indoor pet and animals); UV activates an important skin hormone - solitrol (works with Melatonin to generate changes in mood, circadian rhythms, and seasonal reproduction.).