|
Folic Acid Prevents High Blood Pressure in Women
By: Maureen Williams, ND
Folic Acid Prevents High Blood Pressure in Women
Women who get lots of folic acid from both diet and supplements have less chance of developing high blood pressure than women who get very little, according to a study in the Journal of the American Medical Association (2005;293:320-9) that re-analyzed data from two previous studies.
Hypertension (HTN) is defined as blood pressure higher than 140/90 mm Hg. HTN affects approximately 65 million people in the United States, and the prevalence is increasing as the population ages. Blood pressure is influenced by the openness and elasticity of the blood vessels; HTN indicates loss of elasticity, narrowing of the vessels, or both. It is frequently caused by plaque formation along the inner vessel walls (atherosclerosis). Because the heart pumps against the resistance (pressure) of the arteries, HTN increases the work the heart must do to keep blood flowing to all parts of the body. Chronic HTN can therefore cause thickening of the heart muscle and eventual heart failure. HTN also increases the risk of stroke and kidney failure. Preventing HTN is critical to reducing the incidence of heart disease, the leading cause of death in the US. Public health recommendations are based on evidence that a diet rich in fruits and vegetables and low in saturated fats, combined with regular moderate exercise, can protect against HTN.
Folic acid, one of the B vitamins, occurs naturally in many plant foods (such as beans and green leafy vegetables) and is commonly found in multivitamins and B-complex supplements. Due to its role in preventing some birth defects, a number of foods are now fortified with folic acid, such as cold cereals and other grain products. Along with vitamins B6 and B12, folic acid lowers blood levels of homocysteine, an amino acid that has been found to be a heart disease risk factor. Several small studies have suggested that folic acid supplements might improve the health of the vessel walls and lower blood pressure.
Data from two previous studies of health and disease patterns in women in the US, known as the Nurses' Health Study I and II, were used in the current study to examine the effect of dietary and supplemental folic acid intake on HTN.
More than 238,000 women participated in the two studies. One study included women between 25 and 42 years old and the other included women between 30 and 55 years old. Women in both studies answered questionnaires about health and dietary habits upon enrollment. For both studies, follow-up health questionnaires were filled out every two years for eight years, and a follow-up diet questionnaire was answered after four years.
The study involving younger women found that those who consumed the most total folic acid (more than 1,000 mcg per day) from both diet and supplements had a 46% lower risk of HTN than those who consumed the least total folic acid (less than 200 mcg per day). In the study with older women, consuming the most folic acid afforded an 18% risk reduction compared with consuming the least. In women whose dietary folic acid was less than 200 mcg per day, a combined dietary and supplemental folic acid intake of at least 800 mcg per day reduced HTN risk, relative to a combined intake of less than 200 mcg per day, by 45% in the study with younger women and 39% in the study with older women. In women who did not take supplements, getting the currently recommended 400 mcg per day from food was not protective against HTN in either study.
This analysis of the results from two studies provides evidence that folic acid can significantly reduce HTN risk in women. It further suggests that supplementing with folic acid is an effective way to increase intake to a level that protects against HTN. Future studies should further examine the relationship between folic acid intake and HTN risk, as well as the possible role for folic acid supplements in reducing blood pressure in people with HTN.
--
For more Vitamin Information and other Vitamin Articles, visit Vitamin Herb University.
Maureen Williams, ND, received her bachelor's degree from the University of Pennsylvania and her Doctorate of Naturopathic Medicine from Bastyr University in Seattle, WA. She has a private practice in Quechee, VT, and does extensive work with traditional herbal medicine in Guatemala and Honduras. Dr. Williams is a regular contributor to Healthnotes Newswire.
About the Author
For more Vitamin Information and other Vitamin Articles, visit Vitamin Herb University.
Maureen Williams, ND, received her bachelor's degree from the University of Pennsylvania and her Doctorate of Naturopathic Medicine from Bastyr University in Seattle, WA. Dr. Williams is a regular contributor to VHU's Healthnotes Newswire.
Return to Index
email this
page
Still haven't found what you are
looking for?
Try this search:
Free Email
List Reveals health,
fitness and wellness
tips - secrets and information - delivered directly to
your inbox
How to Benefit from the Mind-Body Connection
(excerpt)
You are about to gain insight into the
mind-body connection. The number of
people who truly understand these principles on our
planet are relatively few.
There is an undeniable connection between our minds and
bodies, you can learn
to use this fact to your benefit.
Dr. Bernie Siegel, author of "Love, Medicine and
Miracles" was once a
distraught cancer surgeon until he
began to understand the greater principles
of the mind-
body connection. He felt dragged down by the artificial
barriers
that existed between patient and doctor, and the
helplessness he often felt as
a result of his inability
to effectively serve those patients. Eventually, those
barriers
were disintegrated by Dr. Siegel's recognition
and growing understanding of the
mind-body connection and
how it could serve his patients and himself.
Dr. Siegel, or Bernie as he began to have his patients
refer to him, had some
startling realizations as a cancer surgeon. He found that
there were actually
quite a few people in the world that successfully beat
the statistics on cancer
survival. He began to recognize that a patient's ability
to defeat something as
serious as cancer had to do with the patient's mind and
attitude about their
disease.
If you would like to see the rest of
this article, please go here:
http://www.tobeinformed.com/repository/mind-body.html
copyright 2004 - David Snape
|
|