The
misconceptions about Cholesterol abound, but the facts are already established.
Cholesterol is vital for numerous biological functions, and dietary
cholesterol does not significantly impact
cholesterol levels in the body.
LDL
needed by the body:
LDL occurs naturally in the body and is essential
for bodily functions vital for life. Only 20% of blood
cholesterol is derived through diet.60-70% of all blood cholesterol
comes from production by the liver, not from pre-formed cholesterol
in the foods. Reference: Turley, S.D. and
Dietschy, J.M. "The Metabolism and Excretion of Cholesterol by
the Liver," in The Liver: Biology and Pathology, pp. 617-642, ed.
By I.M. Arias Raven Press, N.Y. 1988.
LDL is also vital because it transports essential fatty
acids into the cells. Reference: Enter the Zone,
page 121.
Cholesterol
structure:
EFA deficiency causes defective cholesterol and phospholipid
structure – the real reason for misunderstanding
cholesterol LDL.
The body regulates dietary sugar, but there is no regulator
in the body for dietary cholesterol. What do you think this means?
Most
cholesterol NOT produced by diet:
"With even a 30% fat diet, increasing dietary
cholesterol from 319 mg to 941mg per day [close to a 300% increase],
the blood LDL only increased a mere 6% [6 points]!"
Reference: Metabolism 2001 May;50(5):594-597
Cholesterol
and cell structure:
Cholesterol necessary for lipid bi-layer of cells.
Reference: Molecular Biology of the Cell, pg. 481., Bruce
Alberts, Dennis Bray, Julian Lewis, Martin Raff, ke Roberts, Keith Roberts,
James D. Watson, Garland Pub, March, 1994, ISBN: 0815316194
Over 90%
of cholesterol is found in the body cells. If there is not enough
cholesterol in the cell membrane, the walls lose their rigidity and
expand outward, due to the inner pressure of the cell, leading
to possible cell damage, or destruction. Reference:
Textbook of Medical Physiology, pg. 872-873, Arthur C. Guyton, John
E. Hall, W B Saunders Co., January 15, 1996, ISBN: 0721659446
& Elisabeth Schafer, Ph.D., Extension Nutrition
Specialist Diane Nelson, Extension Communications Specialist Iowa State
University & The Consumer's Good Chemical Guide by John Emsley (Science
Writer in residence at Imperial College of Science, Technology and Medicine,
London), ISBN 0-552-14435-5, Corgi 1996.
Cholesterol
is essential for life. Over 90% of cholesterol
is found in the body cells, where it gives integrity
to the cell structure and regulates the two-way flow of nutrients and
waste products. Reference: The Consumer's
Good Chemical Guide by John Emsley (Science Writer in residence at Imperial
College of Science, Technology and Medicine, London), ISBN 0-552-14435-5,
Corgi 1996. & Molecular Biology of the Cell, pg. 481., Bruce Alberts,
Dennis Bray, Julian Lewis, Martin Raff, ke Roberts, Keith Roberts, James
D. Watson, Garland Pub, March, 1994, ISBN: 0815316194.
Reference:
Elisabeth Schafer, Ph.D., Extension Nutrition Specialist Diane Nelson,
Extension Communications Specialist Iowa State University.
Reference: The Consumer's Good Chemical Guide by John Emsley (Science
Writer in residence at Imperial College of Science, Technology and Medicine,
London), ISBN 0-552-14435-5, Corgi 1996.
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