|
Life Expectancy Under Different Kinds of Light
|
||||||||||
|
One study by John Ott, PhD, dramatizes the importance of full spectrum light. He placed 2000 mice under four different types of light. In an otherwise identical, controlled environment, the C3H strain of mice developed spontaneous tumors.
full spectrum light & neurological diseases
Research by Reuven Sandyk, MD, who practises medicine in Connecticut, shows that long-term deprivation from sunlight exposure increases the risk of multiple sclerosis and Parkinson's disease through depressed secretion of the hormone melatonin by the brain's pineal gland. This appears to explain the south-north gradient in the incidence of MS: the farther from the equator, the more common it is.
full spectrum light & the risk of heart attacks and infections
Staying out of the sun may also increase the risk of heart attacks and much more by another route. David Grimes, MD, at Blackburn Royal Infirmary in Blackburn, UK, notes that heart attacks are commonest in the parts of the world--such as northwest United Kingdom--that have the least sunshine. Dr Grimes links respiratory infections and chronic bronchitis, called "the English Disease", to poor immunocompetence due to sunlight deficiency, worsened by cigarette smoking. (In southern Europe, smoking rates are much higher, but recurrent respiratory tract infections are scarce.) Glasgow, Scotland, has high rates of osteomalacia and rickets, which he says are definitely the result of sunlight deficiency. Dr F. A. Spencer has noted a higher incidence of heart attacks in winter; he has related this to low levels of vitamin D and to depression from the winter months
|