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Medical
screening may do more harm than good

Prof. Nicholas Wald, director of Wolfson Institute of
Preventive Medicine, London says hi-tech medical
screening that promises to detect early symptoms of
cancer and cardiovascular diseases may do more harm than
good.
“Screening is usually a weak means of providing
reassurance, because it generally misses most cases of
the disease for which it is carried out and there is
always some harm which is only acceptable if there is
also some benefit,” he says.
Screening
is different from diagnosis in the sense that diagnosis
is performed only when there is a clinical indication of
disease, whereas screening is carried out without any
indication of disease. Mammography to detect breast
cancer, Pap smear to detect cervical cancer, Mole
assessment to detect skin cancer, Virtual colonoscopy to
detect bowel cancer, CT scan to look inside the head,
Body scan to look inside the body are some of the widely
performed medical screening tests.
What
are the adverse effects of unnecessary screening tests?
Anxiety & stress caused and unnecessary investigation &
treatment when the result is false positive (the test
shows positive even though there is no disease), a false
sense of security and delay in treating the disease when
the result is false negative (the test shows negative
missing out the disease), adverse effects of radiation
as scans deliver a hefty dose of radiation and an
avoidable waste of medical resources.
It would be wise to follow the World Health
Organisation’s first and foremost principle of
screening, ‘The condition should be an important health
problem’, before deciding to ‘look into the body’. |
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Lemon juice multiplies green tea's health benefits
Studies have shown that catechins (pronounced ka-tay-kin),
the naturally occurring antioxidants found in tea, is
able to detoxify toxic chemicals, inhibit cancer cell
activity, stimulate production of immune-strengthening
enzymes and reduce the risk of cancer, heart attack and
stroke. But the problem is that catechins are relatively
unstable in the intestines and less than 20 percent
remains after digestion.
Researcher Mario Ferruzzi, assistant professor of food
science at Purdue University found that adding citrus
juice to freshly brewed tea increased recovered catechin
levels by more than five times. Lemon juice caused 80
percent of tea’s catechins to remain. Following lemon,
were orange, lime and grape fruit juices, in terms of
stabilizing power.
“If you want more out of your green tea, add some citrus
juice to your cup after brewing or pick a ready-to-drink
product formulated with ascorbic acid,” suggests
Ferruzzi. Although his study examined only green tea,
Ferruzzi said he believed that some of the results also
could apply to black tea, which is produced by
fermenting green tea.
Those
who prefer black tea’s flavour to that of green tea must
remember that catechin levels in black tea is much lower
that the catechin levels in green tea.
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The fertility diet
Women,
who followed a combination of five or more lifestyle
factors, including changing specific aspects of their
diets, experienced more than 80 percent less relative
risk of infertility due to ovulatory disorders, compared
to women who engaged in none of the factors, according
to researchers at the Harvard School of Public Health,
who studied a group of 17,544 married women.
Making
the right dietary choices and including the right amount
of physical activity may make a large difference in the
probability of becoming fertile, according to Dr. Jorge
Chavarro and Dr. Walter Willett of HSPH Department of
Nutrition.
The
researchers devised a scoring system based on the
following dietary and lifestyle factors.
The ration of mono unsaturated fats to transfats in
the diet.
Protein (animal and vegetable) consumption.
Carbohydrates consumption.
Dairy consumption.
Iron consumption.
Multi Vitamin use.
Body Mass Index.
Physical activity.
The researchers assigned a fertility diet score of one
to give points. The higher the score, the lower the risk
of infertility associated with ovulatory disorders.
The researchers found that the women with the highest
fertility diet scores had the following common factors.
Ate less transfats.
Ate
less sugar from carbohydrates.
Consumed more protein from vegetable than from animals.
Ate more fibre and iron.
Took more multivitamins.
Had a lower Body Mass Index.
Exercised for longer periods.
Consumed more high-fat dairy products.
Consumed less low-fat dairy products.
The relationship between a higher fertility diet score
and lesser risk of infertility was similar for different
subgroups of women regardless of age and whether or not
they had been pregnant in the past.
“We analyzed what happens if you follow one, two, three,
four or more different factors. What we found was that
as women started following more of these
recommendations, their risk of infertility dropped
substantially for each of the dietary and lifestyle
strategies undertaken,” said Chavarro.
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Secrets of health skin and hair

Dermatologists, who recently met at the American
Academy of Dermatology’s SKIN Academy, shared their
secrets of maintaining healthy skin
and hair
“Unless you have really oily skin, because you are
a teenager or work with oils or gases, you do not need
soap to get yourself clean. Pure water does the job to
get you clean. You need to use soap only on your face,
under your arms and in the groin area. As you get older,
the use of soap on the rest of your body can
unnecessarily dry your skin,” says Brian B. Adams, MD,
associate professor of dermatology, University of
Cincinnati.
“When it comes to hair care, less is more. Using
unnecessary products or subjecting the hair to repeated
procedures such as perming, colouring, waving and
straightening can damage the hair and lead to breakage,”
says Zoe D.Draelos, MD, who practises at High Point.
“What you apply to your skin helps give it a healthy,
radiant glow, but remember what you put into your body
is just as important. A balanced diet rich in vitamins
and antioxidants can make a real difference in the
appearance of your skin,” says Susan Taylor, MD,
assistant clinical professor of dermatology, Columbia
University.
“Quit smoking or better yet don’t even start. More and
more young people are smoking and doing so to relieve
stress, but it’s bad for your skin and causes wrinkles.
Deep set wrinkles will appear around your mouth from
puckering, your skin will be dehydrated and dull and you
may experience premature ageing,” says Flor Mayoral, MD,
clinical instructor, department of dermatology and
cutaneous surgery, Miller School of Medicine, University
of Miami.
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Antimicrobial use in animal feed can affect human health

Johns Hopkins University researchers found that poultry
workers in the United States are 32 times more likely to
carry the drug-resistant E.Coli bacteria than others
outside the poultry industry. The study results are
published in the 2007 December edition of Environmental
Health Perspectives.
The use of antimicrobials in industrial food animal
production has been growing steadily. “Some estimates
indicate that well over half of the antimicrobial drugs
produced in the Unived States is used in food animjal
production,” said the study’s lead author Lance B. Proce,
who is a scientific advisor to the Johns Hoplins Center
for a Livable Future.
Antimicrobials are applied to food animals, in sub-
therapeutic doses as growth promoters as they improve
feed conversion (meat to feed ration) and reduce waste
output. Though, initially antibiotics were given to
animals to treat diseases, the accidental finding that
adding the antibiotic streptomycin to chicken feed
increased the growth rate of chickens led to the wide
use of adding antibiotics to animal feed.
The first finding that people were infected after eating
hamburger originating from South Dakota beef cattle that
was fed the antibiotic chlortetracycline for growth
promotion, rang the first alarm bells. More recent
studies have found that animals that are fed
antimicrobial drugs carry disease-resistant bacteria and
these bacteria can be transferred to humans though
direct contact with either animals or with animal meat.
Until such time, the Governments ban the use of
antibiotics in animal feed, people must abstain from
consuming the meat of animals that are fed antibiotics.
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Side-effects of rapid weight loss diets
Arizona State University researchers Carol Johnston and
Pamela Swan from the department of Nutrition and the
department of Exercise & Wellness, who studied the
popular rapid weight loss diets, found that many
biomarkers were affected negatively by the severely
low-carbohydrate intake.
The downside of severely low carbohydrates intake is
that dieters go into what is called ketosis
(inefficiency of the body to oxidise fat),” says Carol
Johnston. Some popular diets such as Atkins diet,
entails very low carbohydrate – less than 20 grams
daily. Diets that severely restrict carbohydrates,
particularly potassium-rich fruits and vegetables, may
have deleterious effects on bones.
Another study found that for those individuals who are
taking in an extremely low amount of carbohydrates,
intense exercise is harming their bodies more than it is
helping.
“120 grams of carbohydrates is enough for an average
person who does moderate exercise but endurance athletes
should eat more carbs, especially for long bouts of
exercise like a marathon,” according to Pamela Swan.
Carbohydrates are grouped into two main categories,
simple carbohydrates found in fruits such as banana,
apple, dates & honey and complex carbohydrates found in
vegetables such as beans, cabbage & cauliflower, grains
such as brown rice, whole wheat & oats and dairy
products such as yoghurt & milk.
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Plastic beauty through cosmetic surgery

Today
the perception of beauty is based in images of models,
who have been surgically made to look beautiful. Many
people feel inadequate of their natural looks.
Breast
uplift is the most popular cosmetic surgery among women
and nose job is the most popular cosmetic surgery among
men. Among the non-surgical cosmetic procedures, botox
is used to smooth forehead lines. And collagen is used
to improve the appearance of wrinkles.
People who plan cosmetic surgery must be aware that
certain cosmetic procedures need not be carried out by
medically qualified personnel and could lead to
side-effects that cannot be reversed or could only be
reversed at a great cost and suffering. “If things go
wrong, some patients could be left scarred physically or
psychologically for life,” said Dr. Andrew Wallance-owen,
Chairman of the Independent Healthcare Advisory
Services’ Working Group on Cosmetic Surgery.
“Some people spend more time choosing their bathroom
tiles than they do choosing their surgeon,” said Dr.
Rajiv Grover a consultant plastic surgeon and Secretary
of the British Association of Aesthetic Plastic
Surgeons. People considering cosmetic surgery must
consider the potential dangers and side-effects and
select the surgeons with care, warned Dr. Rajiv Grover.
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In This Issue
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1.
Medical
screening may do more harm than good
2.
Lemon juice multiplies green tea's health benefits
3.
The
fertility diet
4.
Secrets of health skin and hair
5.
Antimicrobial use in animal feed can affect human
health
6.
Side-effects of rapid weight loss diets
7.
Plastic beauty through cosmetic surgery |
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