Impact Of Health On Intelligence
Health can affect intelligence in various ways. This is one of the most important factors in understanding the origins of human group differences in IQ test scores and other measures of cognitive ability. Several factors can lead to significant cognitive impairment, particularly if they occur during pregnancy and childhood when the brain is growing and the blood–brain barrier is less effective. Such impairment may sometimes be permanent, sometimes be partially or wholly compensated for by later growth.
Developed nations have implemented several health policies regarding nutrients and toxins known to influence cognitive function. These include laws requiring fortification of certain food products and laws establishing safe levels of pollutants (e.g. lead, mercury, and organochlorides). Comprehensive policy recommendations targeting reduction of cognitive impairment in children have been proposed.
Improvements in nutrition, and in public policy in general, have been implicated in worldwide IQ increases (the Flynn effect).
Read more about Impact Of Health On Intelligence: Nutrition, Healthcare During Pregnancy and Childbirth, Stress, Infectious Diseases, Effects of Other Diseases, Other Associations
Famous quotes containing the words impact of, impact, health and/or intelligence:
“Television does not dominate or insist, as movies do. It is not sensational, but taken for granted. Insistence would destroy it, for its message is so dire that it relies on being the background drone that counters silence. For most of us, it is something turned on and off as we would the light. It is a service, not a luxury or a thing of choice.”
—David Thomson, U.S. film historian. America in the Dark: The Impact of Hollywood Films on American Culture, ch. 8, William Morrow (1977)
“Too many existing classrooms for young children have this overriding goal: To get the children ready for first grade. This goal is unworthy. It is hurtful. This goal has had the most distorting impact on five-year-olds. It causes kindergartens to be merely the handmaidens of first grade.... Kindergarten teachers cannot look at their own children and plan for their present needs as five-year-olds.”
—James L. Hymes, Jr. (20th century)
“Youth no less becomes
The light and careless livery that it wears
Than settled age his sables and his weeds,
Importing health and graveness.”
—William Shakespeare (1564–1616)
“The intelligence suffers today automatically in consequence of the attack on all authority, advantage, or privilege. These things are not done away with, it is needless to say, but numerous scapegoats are made of the less politically powerful, to satisfy the egalitarian rage awakened.”
—Wyndham Lewis (1882–1957)