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New
Research Shows: Coffee Drinking Is Healthy
Forget what
somebody may have whispered into your ear in the past,namely that
coffee drinking would be bad for you. Dr. Rob M. van Dam and Dr.Edith
J. M. Feskens from the National Institute for Public Health and
the Environment in Bilthoven, the
Netherlands, have recently completed a prospective study with a
large number of participants.
The results
were published in the Lancet 2002;360:1477-1478. The goal of the
study was to see whether coffee consumption would have a positive
or negative effect on the development of diabetes (type 2 or mature
onset diabetes). Approximately 17,000 men and women were followed
along over a period of time and 306 new cases of diabetes were detected.
The average consumption of coffee was 5 cups per day. There was
a striking difference between those who drank 7 cups of coffee per
day and those who drank 2 cups or less per day: With 7 cups per
day there was a 50 % LESSER risk of developing diabetes. The authors
pointed out that it is known that some of the active ingredients
in coffee are: the bioflavonoid
chlorogenic acid, the minerals magnesium and potassium, and vitamin
B3.
Chlorogenic
acid and magnesium have been known in the past to have a stabilizing
effect on glucose metabolism thus preventing diabetes.The authors
were surprised though about the magnitude of the diabetes protective
effect. They suggested that
other authors should do further studies to confirm their findings
and to attempt to pinpoint the mechanism of action. In the meantime
they cautioned that it would be premature to recommend to increase
coffee consumption for everybody.
Useful related
link to a chapter of my free Internet based
Nethealthbook:
http://www.nethealthbook.com/healthnutritionandfitness.html
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Nuts
Cut Heart Attacks And Strokes In Half
According to Dr. Elliot M. Berry of Hebrew University Hadassah Medical
School in Jerusalem and Dr. Ram B. Singh of the Medical Hospital
and Research Centre, Moradabad/India, the word is out that a Mediterranean
diet with walnuts and almonds, fruits and vegetables can safe lives
and prevent heart attacks.
In a paper,
published in the medical journal Lancet 2002;360:1455-1461, 1000
Asian patients with a high risk for heart disease and strokes were
put on two diets: a "control" heart smart diet and the
experimental diet,which consisted of the Mediterranean diet.
Surprisingly,not
only did the high risk patients benefit from the Mediterranean diet,
but also the control group that had already been on a healthy heart
smart diet. Over 2 years the heart attack
rates, death rates and heart disease event rates were all roughly
cut into half on the Mediterranean diet. Cholesterol levels were
significantly reduced,as much as would have been achieved with expensive
cholesterol lowering medications. According to Dr.Berry the key
to the understanding of this is found in the alpha-linoleic acid
found in nuts and almonds. It is a precursor of the omega-3-fatty
acids also found in fish oil, which in turn lower cholesterol, prevent
blood clotting and are a natural remedy to prevent inflammation
in the body.
Further investigations
will be done by the research team to understand the mechanism of
action of the healthy Mediterranean diet. In the meantime Dr. Berry
stressed that other lifestyle changes must accompany the Mediterranean
diet, namely an active exercise program and regular relaxation exercises
such as yoga.
You may want
to read these useful related links to chapters of
my free Internet based Nethealthbook:
Hardening of
the arteries:
http://www.nethealthbook.com/cardiovasculardisease.html
Fitness:
http://www.nethealthbook.com/healthnutritionandfitness.html
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New
Blood Test To Predict Breast Cancer Survival Rate
Dr. Keyomarsi,
a researcher and radiation oncologist from the M.D. Anderson Cancer
Institute in Houston/Texas, has published a very important piece
of research in the New England Journal of Medicine (N Engl J Med
2002;347:1546-1547,1566-1575).
A group of
394 breast cancer patients were followed for 6.4 years and cyclin
E was measured with a special blood test. Cyclin E is a key substance
involved in cell division in general and also in breast cancer cells.
Dr. Kyomarsi's research showed that cyclin E, and in particular
high levels of its socalled "truncated isoforms", correlated
very well with poor survival. On the other hand low cyclin E levels
(truncated isoforms) were a powerful predictor for excellent survival.
In the above mentioned breast cancer study 12 patients out of a
group of stage 1 patients (= localized breast cancer) died after
an average of 4.1 years from the point of diagnosis. All of these
patients had high cyclin E levels.
In contrast,
none of the other stage 1 patients had died within 5 years from
the diagnosis and all of their cyclin E levels were low. Other known
risk factors for poor survival are lymph gland metastases, negative
estrogen receptors on the surface of the cancer cells and late-stage
disease.
Each of those
factors has a risk of
about 1.7-fold. A high (truncated isoform) cyclin E level is associated
with a 2.1-fold risk when compared to the low risk group with a
low cyclin E level. There is a subgroup of breast cancer patients
with high total cyclin E levels who have a
risk of 13.3-fold of dying from breast cancer.
You may want
to read these useful related links to chapters of my free Internet
based Nethealthbook:
A general overview
regarding cancer:
http://www.nethealthbook.com/cancer_canceroverview.html
This chapter deals specifically with breast cancer:
http://www.nethealthbook.com/cancer_breastcancer.html
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Heart
Attack And Stroke Risk Measured With C-Reactive Protein
An old blood
test that has been popular in assessing how aggressive rheumatic
illnesses such as rheumatoid arthritis or lupus are, is now considered
as the newest test to assess the risk of heart attacks. Up to now
subfractions of cholesterol, in
particular the LDL cholesterol level, has been used to assess the
risk for a heart attack, but this according to a new study in the
New England
Journal of Medicine (Nov. 14, 2002) by Dr. Paul Ridker should
be supplemented by a blood test checking for the C-reactive protein.
What is interesting
about the C-reactive protein is that it originates from certain
lining cells in blood vessels of liver tissue when inflammatory
substances circulate in the body.
Other research
has shown in the past that arteriosclerosis is in part due to an
inflammatory process in the lining of the blood vessels that leads
to the production of the C-reactive protein. Unfortunately other
chronic illnesses and infections also lead to an elevation of the
C-reactive protein as does the common cold or the flu. However,
when 28,000 women of the Brigham and Women's Hospital study were
followed for 8 years it turned out that the C-reactive protein was
a more reliable predictor for who would eventually suffer from a
stroke or a heart attack than the traditional LDL cholesterol. The
investigators felt that the LDL cholesterol is predictive for who
is more likely to develop fatty deposits (atheromatous plaques).
On the other
hand the C-reactive protein appears to be more predictive
for who is at a high risk for rupture of these atheromatous plaques.
The bottom line is prevention by eating a diet with less fatty meats,
by eating more fruit and vegetables and by engaging in an exercise
program. Some patients need their cholesterol reduced with medication
such as the statins.
You may want
to browse through hese useful related links to chapters of
my free Internet based Nethealthbook:
For more details
regarding the use of the C-reative protein test
in rheumatoid arthritis see this link:
Regarding arteriosclerosis,
heart attacks and strokes follow
this link:
http://www.nethealthbook.com/cardiovasculardisease.html
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"WAVE"
Trial Failed To Show Benefits Of Estrogen/Vitamins
Dr. David D.
Waters of the University of California at San Francisco reported
in Chicago at the American Heart Association's Scientific Session
2002 about the WAVE trial. This stands for "Women's Angiographic
Vitamin and Estrogen" trial.
The results
of this study were simultaneously published in the Journal of the
American Medical Association(JAMA 2002;288:2432-2440). It was a
carefully designed randomized study where 423 women with established
blood vessel damage to their hearts (established by angiography)
were put on a therapy and then followed for an average of 2.8 years.
Essentially the question
was whether or not estrogen and vitamins (Vit.E and C) would have
a protective effect on the blood vessels. Surprisingly the worst
outcome was in the group with estrogen replacement and vitamins.
The placebo group (=no estrogen, only vitamins) had the lowest death
rate.
The authors
felt that the beneficial effect of estrogen on heart vessels could
not been verified in this study. The take home message to the physicians
at the conference was that they should concentrate on lowering the
known risk factors: weight reduction, blood pressure control, cholesterol
lowering and increasing exercise. Estrogen should be
given in low doses (0.625mg per day) only to those women who are
symptomatic with hot flashes, but not to every postmenopausal woman.
NOTE
: This group of postmenopausal women is a selection of women more
likely suffering from hyperinsulinism with a higher rate of cardiovascular
disease (and also arthritis and possibly a higher risk for cancer
as well). The
most logical therapy for these women is to work on weight loss,
to increase exercise and to change their diet to a zone diet as
this is known to lower cholesterol. Hoping to cure these women with
estrogen or vitamin manipulation alone does not make "medical
common sense" to me. You may want to read these useful related
links to chapters of my free Internet based Nethealthbook: For
links to arteriosclerosis, heart attacks and strokes see this link:http://www.nethealthbook.com/cardiovasculardisease.html
For a link to hyperinsulinism follow this link:
http://www.nethealthbook.com/hormonalproblems_diabetesmellitus.html
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