Ovarian cancer is a malignant tumor that begins in a woman’s ovaries, two almond-sized organs located on each side of the pelvis that produce eggs and are the main source of the female hormones estrogen and progesterone. In ovarian cancer, ovarian cells grow out of control and form a tumor. Ovarian cancer is the fifth-leading cause of cancer death among U.S. women after cancers of the lung, breast, colon, and pancreas. About 23,000 women are diagnosed with the disease each year, and 14,000 die from it -- a relatively high fatality rate caused by the failure to catch many cases early. Women in the sunnier regions of the world have a much lower risk of ovarian cancer than those who dwell in colder climates. Perhaps sun exposure -- and, more precisely, vitamin D production in the body -- help prevent ovarian cancer? Obese women have a higher risk of developing ovarian cancer than their thinner counterparts.
Nutrients that may be helpful for ovarian
cancer
by Ray Sahelian, M.D.
Women who eat plenty of vegetables, particularly carrots, tomatoes and other foods high in carotene and
lycopene
may reduce their risk.
Flavonoids are found in fruits and vegetables. One flavonoid that has been
studied is Apigenin.
Tea drinkers have a lower rate of ovarian cancer.
Genistein is an
isoflavone that looks promising in fighting ovarian cancer.
We
studied the effect of genistein and daidzein on ovarian cancer cell growth.
Five ovarian cancer cell lines from Stage IIIC disease
were evaluated. Sulforhodamine B and colony formation assays were used to
analyze growth inhibitory effects of genistein and daidzein alone and with
cisplatin, paclitaxel or topotecan. Apoptosis induction was studied by
determining caspase-3 activity. Inhibition of growth (50-80%), colony
formation and colony size was seen at 144 microm of genistein, 0-23% reduction
was demonstrated at 9 microm. At 144 microm, the colony size was inhibited >75%;
at 9 microm 4/5 cell lines had >50% reduction. Caspase-3 activity was induced with all concentrations of genistein.
Cisplatin and topotecan combined with genistein resulted in a mostly additive effect, paclitaxel was
slightly less than additive. We demonstrate an inhibitory effect of genistein on ovarian cancer cell growth. Anticancer Res. 2004 Mar-Apr. Inhibitory effect of genistein and daidzein on ovarian
cancer cell growth.
Ginkgo biloba has
potential, too.
Studies conducted in women and in the laboratory strongly suggest
that the herbal supplement Ginkgo biloba may help lower the risk of
developing ovarian cancer. In a population-based study involving more than
600 women with ovarian cancer and 640 healthy control women, researchers
found that the most commonly used herbals were ginkgo, Echinacea, St.
John's Wort, ginseng, and chondroitin. But only ginkgo appeared to ward
off ovarian cancer. According to the data, women who took ginkgo
supplements had a 60 percent lower risk of ovarian cancer.
Ginger can kill
ovarian cancer cells.
A study on ginger was done using cells in a lab
dish, which is a long way from finding that it works in actual cancer
patients. Researchers tested ginger powder dissolved in solution by
putting it on ovarian cancer cell cultures. Ginger killed the ovarian
cancer cells in two different ways -- through a self-destruction process
called apoptosis and through autophagy in which cells digest themselves.
Ginger spice has been shown to help control inflammation, which can
contribute to the development of ovarian cancer cells. In multiple ovarian
cancer cell lines, ginger induced cell death at a similar or better rate
than the platinum-based chemotherapy drugs typically used to treat ovarian
cancer. Whether the same effects of ginger in test tubes occurs when
humans consume ginger is not known.
Vitamin D's role in this condition is not clear.
Dr. Dr. Linda S. Cook of the University of New Mexico in Albuquerque
says there isn't enough evidence to back or debunk the claim that
vitamin D can help reduce the risk of ovarian cancer, despite several
recent studies making this claim. Dr. Dr. Linda S. Cook continues,
"Based on the current evidence, it is premature to make any definitive
claims for or against the role of vitamin D in ovarian cancer,
nevertheless, because an association between vitamin D and the disease
is biologically plausible, and there were problems with the studies that
we reviewed, this is an area worthy of further primary research."
American Journal of Obstetrics & Gynecology, March 2010.
Tea drinking
Woman who drink two or more cups of tea every day may
cut their risk of ovarian cancer in half. Both black and
green teas are
rich in antioxidant chemicals called polyphenols, which have been shown to
block cancer growth in lab and animal studies. To investigate whether tea drinking might
protect against ovarian cancer, 61,057 women - ranging in age from 40 to
76 - participating in a mammography screening program were followed for an
average of 15 years. Compared with women who never drank tea, those who
drank less than a cup a day had an 18-percent lower risk of developing
ovarian cancer. One cup daily cut risk by 24 percent, while two or more
cups lowered risk by 46 percent. Tea drinkers were thinner and ate more
fruits and vegetables, the researchers report, so they may have had a
healthier overall lifestyle that led to reduced ovarian cancer risk.
Nevertheless, investigators add, the fact that risk declined steadily as
tea consumption increased-known scientifically as a dose-response
relationship-suggests the tea itself is a factor. Archives of
Internal Medicine, 2005.
Ovarian
cancer diet
After following more than 60,000 women for an
average of 13 years, Swedish researchers found that those who drank at least
two glasses of milk every day or consumed at least four daily servings of dairy
products were twice as likely to develop serous epithelial ovarian cancer as
those who consumed less than two servings of dairy a day.
Women who eat a lot of processed meats, such as salami and hot dogs, are at a higher risk. Those who eat a lot of fish have a lower risk of the deadly tumors. American Journal of Clinical Nutrition, 2010.
Dr. Maria Rossi, of Istituto di Ricerche Farmacologiche "Mario Negri" in Milan, and her staffers found that women who ate the most isoflavones and flavonols were the least likely to have ovarian cancer. Lab studies suggest flavonoids may also have cancer fighting properties in addition to their antioxidant effects. The researchers compared flavonoid intake for women diagnosed with epithelial ovarian cancer and those who had been hospitalized for acute, non-cancer-related conditions, categorizing them into five groups based on their intake of each of six different flavonoids. The women with the highest flavonol intake were less likely to have ovarian cancer than women with the lowest flavonol intake. High intake of isoflavones cut ovarian cancer risk by half. Isoflavones are found in tea and soy foods, both of which have been linked to a lower ovarian cancer risk, possibly due to isoflavones' estrogen-blocking effects. International Journal of Cancer 2008.
Cancer
Epidemiol Biomarkers Prev. 2004.
We assessed the association of
ovarian cancer with dietary factors in a population-based case-control study in
Canada. Diet information was collected on 442 incident cases of ovarian cancer
diagnosed in 1994 to 1997 and 2,135 population controls via a self-administered
questionnaire. We did not observe an association of ovarian cancer risk with
dietary fat intake, including saturated, monounsaturated, and polyunsaturated
fatty acids, protein, carbohydrate, dietary fiber, fruit, dairy products, meat
products, fish, chicken, grain products, nut products, baked desserts,
margarine, butter, mayonnaise, and supplement of multiple vitamins, vitamin A,
vitamin C, calcium, iron, zinc, and selenium. Our findings suggested that
ovarian cancer risk was positively associated with higher consumption of dietary
cholesterol and eggs and inversely associated with higher intake of total
vegetables and cruciferous vegetables and supplementation of vitamin E,
beta-carotene, and B-complex vitamins.
Exercise
Moderate physical activity may help women lower their chances of developing
ovarian cancer. A possible explanation for the beneficial effects is enhancement
of the immune and antioxidant systems, and lower risk of obesity. Too much
exercise may cause immune suppression.
Estrogen and ovarian cancer
Hormone use increases risk. There's an increased risk of ovarian cancer risk with
postmenopausal estrogen use. The risk of ovarian cancer is increased in
women who use unopposed estrogen for 10 years or more, and in those taking
estrogen and progestin for 5 years or more. Women who have endometriosis
have are more likely to have ovarian cancer in the future.
No matter how hormone replacement therapy is
given, it increases the risk of ovarian cancer. Journal of the American
Medical Association, July 15, 2009.
Ovarian cancer symptoms and sign
Ovarian cancer, called the silent killer because it often goes
undetected, does present with symptoms. Symptoms of ovarian cancer to look
out for include: A bloated abdomen, difficulty eating or feeling full
quickly, pelvic pain
and an urgent need to urinate, which some associate with menstruation, especially if the symptoms are severe, frequent
and simultaneous, and last more than 2 or 3 weeks. The importance of early diagnosis is illustrated in
five-year survival rates that approach 90 percent if the disease is caught
early versus 20 percent if diagnosed after it has progressed. Vague
symptoms (reported by noncancerous women are less severe and less frequent
when compared with women with ovarian cancer. Women with ovarian cancer
typically have symptoms of recent onset and have multiple symptoms that
coexist.
Abdominal swelling, pain, and other target symptoms are
common in the months before ovarian cancer is diagnosed. Some patients
with ovarian cancer do report signs and symptoms many months before their ultimate
diagnosis, and some ovarian cancer patients could have had an earlier
diagnosis if pelvic imaging was included in their workup.
Types
There are three main types of ovarian tumors – some of which are
benign and some are malignant -- named for the kind of cells they start
from. The most common type of tumor, an epithelial tumor, begins in the
cells that cover the surface of the ovary. Ovarian tumors can also begin
in the egg-producing cells (germ cell tumors) and in the supportive tissue
surrounding the ovaries (stromal tumors), but these types of cancer are
rare. Cells from an ovarian tumor can break away and spread to other parts
of the body.
Ovarian cancer treatment
Although surgery followed by paclitaxel / carboplatin (TJ) therapy
is a standard modality for the initial treatment of ovarian cancer, the
majority of patients require additional treatment.
Hereditary
Family history is the strongest risk factor for ovarian cancer.
Three clinical manifestations of hereditary ovarian cancer have been
recognized: (1) "site-specific" ovarian cancer, (2) the breast and ovarian
cancer syndrome, and (3) the hereditary nonpolyposis colorectal cancer (HNPCC;
Lynch II) syndrome.
Ovarian cancer diagnosis
Annual screening with a technique called transvaginal ultrasound, coupled
with a blood test for CA125, a protein that can be elevated in the setting
of ovarian cancer, does not reliably detect ovarian cancer early at a more
curable stage.
Screening
Annual screening with ultrasound and a blood test called CA 125 usually
misses early cases of ovarian cancer. In addition, ovarian cancer
screening often leads to unnecessary biopsies and other surgical
procedures. The U.S. Preventative Services Task Force recommends against
such screening. Early-stage ovarian cancer often has only mild or no
symptoms. Because results of early screening to detect this cancer in
the early stage is not precise, it is usually diagnosed after it has
progressed and become more deadly. Less than 20 percent of all ovarian
cancers in the U.S. are diagnosed before they spread outside of the
ovary. Obstetrics and Gynecology, April 2009.
Dr. Gordon Rustin from Mount Vernon Cancer Center, Hertfordshire, UK, says Initiating second-line chemotherapy for ovarian cancer recurrence based on an increase in the tumor marker CA125 alone does not improve overall survival compared to waiting until clinical symptoms of recurrence arise. American Society of Clinical Oncology meeting in Orlando, June 2009.
Ovarian Cancer research
studies
For a woman who undergoes hysterectomy for
benign disease such as fibroids, leaving both ovaries in place has
long-term survival benefits, at least if she is no older than 65 years and
at average risk for ovarian cancer. Ovary removal is often recommended
along with hysterectomy, on the thinking that it prevents the possibility
of ovarian cancer developing. However, women who undergo ovary removal
before age 55 are nearly 9 percent more likely to die before age 80. Those
who have their ovaries removed before age 59 have a nearly 4 percent high
risk. Gynecologists who have been looking at the issue of (ovary removal)
have focused on one thing -- ovarian cancer. Women are living longer and
the major killer of women is heart disease, taking 25 times more women's
lives than ovarian cancer.
Association of dietary vitamin A, carotenoids, and other antioxidants with
the risk of ovarian cancer.
Cancer Epidemiol Biomarkers Prev. 2005 Mar.
Antioxidants may protect the ovaries from oxidative damage and reduce the
risk of ovarian cancer. Although a few studies have examined the relation of
antioxidant intake to the risk of ovarian cancer, the results have been
inconclusive. Questions still remain regarding the effects of confounding
factors, such as menopause, tobacco smoking, and alcohol drinking, on the
association between antioxidants and ovarian cancer development. To
examine the association of the consumption of micronutrients from foods and
supplements with the risk of ovarian cancer. A structured questionnaire
was administered to 558 histologically confirmed epithelial ovarian cancer cases
and 607 population controls from a multiethnic, population-based case-control
study conducted between 1993 and 1999 in Hawaii and Los Angeles.
Overall, vitamin A and carotene intakes were modestly associated with a reduced
risk of ovarian cancer. Inverse gradients in ovarian cancer risk with increasing
dietary intake of vitamin A and beta-carotene were somewhat stronger among women
with mucinous histologic types, smokers, and nondrinkers. A significant positive
trend in risk associated with increasing beta-cryptoxanthin intake was observed
among postmenopausal women, among women with nonmucinous tumors, and among
nonsmokers. The intake of other carotenoids and antioxidants, either from foods
or supplements, was unrelated to ovarian cancer risk. Our findings
suggest that dietary vitamin A and beta-carotene are modestly protective
against ovarian cancer, particularly among smokers.
Ovarian cyst
Ovarian cysts are fluid-filled, sac-like structures within an ovary. The
term cyst refers to a fluid-filled structure. Therefore, all ovarian cysts
contain at least some fluid. With routine obstetric ultrasound examinations,
ovarian cysts are now more commonly diagnosed during pregnancy and their
management is still a challenging clinical issue among obstetricians.
Ovarian cyst symptom
The majority of ovarian cysts are not noticed and resolve without women ever
realizing of their existence. When a cyst causes symptoms, pain in the belly or
pelvis is by far the most common one. The pain from an ovarian cyst can be
caused from rupture of the cyst, rapid growth and stretching, bleeding into the
cyst, or twisting of the cyst around its blood supply.
Other articles of interest
AHCC supplement
Graviola herb in lab
studies has anti cancer benefit
Mangosteen herb
Polycystic ovarian syndrome or disease, see polycystic
ovary syndrome
Ovarian cancer natural treatment questions
I am attending Santiago High School in Corona, CA. I am
currently doing a research paper and I chose as my topic ovarian cancer and soon
became interested by the information i gathered on how it is currently being
tested and treated with ginkgo. What causes ovarian cancer? How do you feel
about using herbs such as ginkgo for the treatment or prevention of ovarian
cancer verses using chemotherapy?
Ovarian cancer is caused by genetics, hormonal factors, the
types of food people eat over a lifetime, lack of exercise, potential
environmental toxins and probably other factors that are not yet fully clear.
Ginkgo biloba is not a treatment for ovarian cancer, but rather may lower the
risk but more studies are needed to confirm this. For the time being, a woman
with ovarian cancer should follow accepted medical practice since the role of
nutritional treatment is not well investigated.
I am a medical doctor. My patient was diagnosed with a
very early ovarian cancer. The cancer was limited to one ovary only which was
removed intact. Now she wants alternative treatment, after rejecting a possible
chemotherapy . What would you suggest. She is on antioxidants. She is 49, and I
she is trying to stop smoking.
I am not in a position to offer individual suggestions to treat
cancer of the ovary, but perhaps some of the research information on the page
will help.