Release date: 11/11/2004
Leading Manufacturer States Study Conclusions Are Unwarranted and
Misleading for Healthy Individuals
NORTHRIDGE, Calif. (November 11, 2004) - Pharmavite, makers of Nature MadeŽ
vitamins and supplements said the conclusions drawn by Johns Hopkins
researchers on vitamin E use and increased mortality risk are misleading
because the researchers only looked at a select, limited group of studies.
The researcher's conclusions appeared in the November 10 online edition of
The Annals of Internal Medicine.
"This analysis focused on a carefully selected group of earlier published
clinical studies whose populations suffered from a number of grave diseases
where there was a very high risk of mortality to begin with, including
Alzheimer's, Parkinson's, cancer, cardiovascular disease and more," said
Dave Madsen, Ph.D., Pharmavite director of scientific affairs. "The
researchers chose not to review long term studies of the general population
which demonstrate vitamin E's positive health benefits, including the Nurses
Study, the Finnish Study and the Iowa Women's Study."
For example, a study of approximately 90,000 nurses suggested that the
incidence of heart disease was 30 to 40 percent lower among nurses with the
highest intake of vitamin E from diet and supplements. Researchers found
that the apparent benefit was mainly associated with intake of vitamin E
from dietary supplements. High vitamin E intake from food was not
associated with significant cardiac risk reduction.
Vitamin E is a fat-soluble vitamin and a powerful antioxidant that has been
touted for its numerous health benefits, including a study by Johns Hopkins
researchers published in the Annals of Neurology showing that 400 IUs of
vitamin E, taken in concert with 500 mg of vitamin C, reduced the risk of
Alzheimer's by 60 percent.
"There is a great body of evidence documenting the proven health benefits of
Vitamin E. People who want to maintain good health should consume 100 to
400 IUs of vitamin E every day, in addition to maintaining a healthy diet,"
says Carroll Reider, M.S., R.D., Pharmavite director of consumer education.
Madsen reported other weaknesses in the analysis including the fact that
only nine of the studies reviewed had people taking vitamin E alone, and
that 18 of the 19 studies analyzed had no statistically significant increase
in mortality. Further, the Institute of Medicine (IOM) has set the upper
tolerable intake level for vitamin E at 1,000 mg or 1,600 IUs per day.
Madsen said, "The IOM defines upper limit as 'the maximum intake of a
nutrient that is likely to pose no risk of adverse health effects in almost
all healthy individuals in the general population.' It will take more than
one skewed analysis of pre-existing studies to refute this long-standing
guideline.
"The bottom line: Overwhelming evidence supports that vitamin E is safe
when taken as recommended and has proven health benefits for healthy
people."
1. Stampfer MJ, Hennekens CH, Manson JE, Colditz GA, Rosner B, Willett
WC. Vitamin E consumption and the risk of coronary disease in women. N Engl
J Med 1993;328:1444-9.
2. Knekt P, Reunanen A, Jarvinen R, Seppanen R, Heliovaara M, Aromaa A.
Antioxidant vitamin intake and coronary mortality in a longitudinal
population study. Am J Epidemiol 1994;139:1180-9.
3. Bostick RM, Potter JD, McKenzie DR, Sellers TA, Kushi LH, Steinmetz
KA, Folsom AR. Reduced risk of colon cancer with high intakes of vitamin E:
The Iowa Women's Health Study. Cancer Res 1993;15:4230-17
4. Zandi, P. Archives of Neurology, January 2004; vol 61: pp 82-88.