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Jul 03
First swine flu death in India reported from Kerala
The 52-year-old NRI, who was suspected to have contracted the flu, died shortly after he was admitted to a hospital in Kerala's Kollam district on Wednesday night, Health officials said.

The throat swabs of Stanley Pelis, who arrived in Kerala two weeks ago from the UK, have been sent to the National Institute of Communicable diseases, New Delhi. If confirmed, he would be the first victim of the flu in the country.

Pelis, hailing from Kollam, was admitted to Holy Cross Hospital at Kottayam with high fever and breathlessness at around 7 p.m. on Wednesday and died after two hours, Dr K Shylaja, Medical Director, said.

The four new cases are reported from Gurgaon, Bangalore, Pune and Kochi.

Jul 02
Freedom makes kids more active
Researchers at the University of Bristol tracked the movements of 1,307 children using GPS technology.

They also asked the pupils, aged ten and 11 from 23 schools, to complete a questionnaire about how much freedom they were given to travel outside the home unsupervised by their parents.

Participants said they were never, sometimes, often or always allowed to go to local shops, a big shopping centre, park or playground, sports centre, swimming pool, library, school, cinema, friend's house, amusement arcade, bus stop or train station.

The researchers found that both boys and girls given greater freedoms were much more active on weekdays than those closely watched by adults.

"This is the first study to show that freedom to move around unsupervised in the local and wider neighbourhood is directly related to how physically active children are,” the Scotsman quoted Dr Ashley Cooper, senior investigator on the study, as saying.

"These findings suggest that giving children more independence to move outside is related to greater levels of physical activity, which is important for health.

"But we also know that parents restrict how much independence they give their children for very good safety reasons.

"More work now needs to be done so we can discover how to get that balance right," Cooper added.

Jul 02
Widespead And On The Increase - Vitamin D Deficiency
A new report issued by the International Osteoporosis Foundation (IOF) and published in the scientific journal Osteoporosis International1, shows that populations across the globe are suffering from the impact of low levels of vitamin D. The problem is widespread and on the increase, with potentially severe repercussions for overall health and fracture rates.

Compiled by IOF's expert working group on nutrition, the report reviews the scope and causes of low vitamin D levels in six regions: Asia, Europe, Latin America, Middle East and Africa, North America and Oceania. Regional reports are available on the IOF website

Vitamin D is mainly produced in the skin upon exposure to sunlight, and, to a lesser extent, is derived from nutritional sources. It plays an important role, through its influence on calcium levels, in the maintenance of organ systems, and is needed for normal bone mineralization and growth. Suboptimal levels of vitamin D may lead to increased risk of osteoporosis and hip fracture and, in severe cases, to the development of rickets, a softening of bones in children that can lead to skeletal fractures and deformity.

Although there is ongoing debate as to what constitutes the optimal level of vitamin D, the report shows that regardless of whether it is defined at 50nmol/L or 75nmol/L, vitamin D status is seriously inadequate in large proportions of the population across the globe.

The main risk factors for low vitamin D levels include older age, female sex, lower latitudes, winter season, darker skin pigmentation, less sunlight exposure, dietary habits, and the absence of vitamin D fortification in common foods. Further factors include the increase in urbanization, where people tend to live and work indoors, as well as cultural practices that tend towards sun avoidance and the wearing of traditional clothing that covers the skin. The severity of the problem in Middle East and South Asia arises from the combination of several of these risk factors.

These findings suggest that prevention strategies must be initiated at the national level - especially given the increasing ageing of populations in many regions of the world. National plans of action should encourage safe, limited exposure to sunlight and improved dietary intake of vitamin D, whilst considering fortification of foods as well.

Jul 02
Patients With Moderate To Severe Periodontitis Need Evaluation For Heart Disease Risk
Additional research is called for and patients with moderate to severe periodontitis should receive evaluation and possible treatment to reduce their risk of atherosclerotic cardiovascular disease (CVD), according to a special consensus paper by editors of The American Journal of Cardiology and Journal of Peridontology in the July 1, 2009 issue of The American Journal of Cardiology, published by Elsevier.

Periodontitis, a bacterially-induced, localized, chronic inflammatory disease, destroys connective tissue and bone that support the teeth. Periodontitis is common, with mild to moderate forms affecting 30 to 50% of adults and the severe generalized form affecting 5 to 15% of all adults in the USA. In addition, there is now strong evidence that people with periodontitis are at increased risk of atherosclerotic CVD - the accumulation of lipid products within the arterial vascular wall.

The explanation for the link between periodontitis and atherosclerotic CVD is not yet clear, but a leading candidate is inflammation caused by the immune system. In recent years the inflammation is now recognized as a significant active participant in many chronic diseases. Other explanations for periodontitis and atherosclerotic CVD are common risk factors such as smoking, diabetes mellitus, genetics, mental anxiety, depression, obesity, and physical inactivity.

Regardless of the cause, the expert panel believes that the current evidence is strong enough to recommend that doctors assess atherosclerotic CVD in their patients with periodontitis. The research recommends that patients with moderate to severe periodontitis should be informed that there may be an increased risk of atherosclerotic CVD associated with periodontitis, and those patients with one or more known major risk factor for atherosclerotic CVD should consider a medical evaluation if they have not done so in the past 12 months.

Jul 02
Combating Blood Flukes By Using Gene Map
The first microsatellite-based genetic linkage map has been published for Schistosoma mansoni, a blood fluke that is known to infect over 90 million people in Africa, the Middle East and the New World. Researchers writing in BioMed Central's open access journal Genome Biology hope the map will stimulate research and open doors to new advances in combating this neglected human pathogen.

S. mansoni, a blood fluke, is one of the major causes of schistosomiasis, a chronic disease, with varying symptoms depending on the organs affected. Individuals with intestinal infections develop an apparent 'potbelly'. Acute, hepatic and intestinal schistosomiasis are all commonly seen. The World Health Organization estimates that more than 200,000 deaths per year are due to schistosomiasis in sub-Saharan Africa alone, and points out that the chronic nature of the condition has a long-term disabling effect.

Charles Criscione, from Texas A&M University, College Station, USA, and a team of researchers that included Philip LoVerde from the University of Texas Health Science Center and Timothy Anderson from the Southwest Foundation for Biomedical Research in San Antonio, USA, used two adult flukes to breed 88 S. mansoni flukes. By comparing the genetic information of the offspring to the parents, the researchers are able to generate a genetic map of the chromosomes of this pathogen. According to Criscione, "Linkage mapping has been very successful for mapping the genes underlying outward traits in a number of parasitic organisms. In malaria parasites, the linkage map has resulted in the identification of major genes underlying drug resistance and host specificity. Similarly, linkage maps of the parasitic protozoans, Toxoplasma and Eimeria have resulted in mapping of factors underlying acute virulence".

The researchers hope that their map will help overcome the current lack of tools available to study S. mansoni's molecular, quantitative and population genetics, and provide a fundamental framework for tackling both applied and basic questions about S. mansoni. Criscione said, "The map has multiple applications for developmental and evolutionary biology. It will facilitate high resolution population genetic studies of S. mansoni, which will improve our understanding of transmission patterns in affected areas. The map presented expands the genetic toolkit for S. mansoni providing opportunities to understand fundamental features of blood fluke biology, and opening doors to new advances in combating this neglected human pathogen". This research was supported by the NIH.

Jul 02
Vegetarians Have Lower Cancer Risk, UK Study
A 12-year study that followed over 60,000 Britons, half of whom were vegetarian, suggests that vegetarians had a lower risk of developing cancer than meat-eaters. However, more studies are needed before we can use this evidence as sufficient reason to ask people to change their diets, say the researchers and other experts.

The study was the work of Dr Naomi Allen, an epidemiologist at Oxford University, and colleagues from the UK and New Zealand, and is published in the 16 June advance access issue of the British Journal of Cancer.

Allen told the press:

"This is strong evidence that vegetarians have lower rates of cancer than meat eaters."

For the study, Allen and colleagues used data from the British arm of the European Perspective Investment into Cancer and Nutrition (EPIC) which is following half a million people throughout Europe.

For an average follow up of 12.2 years, they studied 61,566 British men and women, which included 32,403 meat eaters, 8,562 non-meat eaters who ate fish but not meat (the "fish eaters") and 20,601 vegetarians (ate neither fish nor meat).

Over the follow up period there were 3,350 incident cancers of 20 different types, including 2,204 among the meat eaters, 317 among the fish eaters and 829 among the vegetarians.

Using statistical tools they calculated the relative risk of developing cancer among the three groups, and adjusted for age and a range of other potential confounders such as smoking, alcohol, body mass index (BMI), exercise/physical activity, and in the case of the women only, whether they took oral contraceptives.

The results showed that overall, vegetarians were 12 per cent less likely to develop cancer than meat eaters, while fish eaters were 18 per cent less likely (however fish eaters was also a smaller sample and potentially a less reliable statistic).

Thus, while in the general population about 33 people in 100 will get cancer at some point in their lifetime, for people who don't eat meat this risk is about 29 in 100.

Such figures suggest a change of diet could prevent 2 million Britons from developing cancer.

But lead author Professor Tim Key, also from Oxford University, told the media we should not rely too strongly on these findings:

"At the moment these findings are not strong enough to ask for particularly large changes in the diets of people following an average balanced diet," he said, according to a BBC report.

For some cancers like leukaemia, stomach and bladder cancers, the risk was considerably lower, with vegetarians 45 per cent less likely to contract one of these cancers than meat eaters, but for other cancers such as prostate, breast and bowel cancer, the risk was much the same for vegetarians and meat eaters.

One of the things that stood out, was the fact that vegetarians appeared to have much lower risk of getting cancers of the lymph and blood. When these were grouped, vegetarians had about 50 per cent lower risk than meat eaters. And in one rare cancer in particular, multiple myeloma, a cancer of the bone marrow, vegetarians were 75 per cent less likely to develop the disease compared to meat eaters.

And for these cancers the fish eaters had much the same risk as the meat eaters.

Speculating as to why this might be so, the researchers said it could be either because of something in meat, perhaps viruses or compounds that cause mutation, or it could be a protective effect in vegetables.

One area where vegetarians and fish eaters had a much higher risk of cancer was in the case of cervical cancer, where the risk was nearly double for these groups compared to meat eaters.

The researchers suggest this could be down to chance because of the small numbers involved, or it could be something about diet that affects the ability of the cancer-causing virus to take hold.

The researchers said they also found marked differences between meat-eaters and vegetarians in the propensity to cancers of the lymph and the blood, with vegetarians just over half as likely to develop these forms of the disease.

Sara Hiom, director of health information at Cancer Research UK, a charity that funded the research, told the press:

"These interesting results add to the evidence that what we eat affects our chances of developing cancer."

She said we already knew that eating a lot of red and processed meat increased people's risk of stomach cancer but she said we should be careful about interpreting the results of this study.

"The links between diet and cancer risk are complex and more research is needed to see how big a part diet plays and which specific dietary factors are most important," said Hiom, according to a report in the Telegraph.

However, she did say that the low number of vegetarians who developed cancer in this study would suggest that it might be wise to follow the advice of Cancer Research UK, and other groups, that people should eat:

"A healthy, balanced diet high in fibre, fruit and vegetables and low in saturated fat, salt and red and processed meat."

Dr Panagiota Mitrou, the World Cancer Research Fund's Science and Research Programme Manager told the BBC:

"The suggestion that vegetarians might be at reduced risk of blood cancers is particularly interesting."

But he also said the findings should be treated with caution, because we don't know enough about the underlying mechanisms that link diet and these types of cancer.

Jun 29
What Is Menopause? What Are The Symptoms Of Menopause?
The menopause marks the time in a woman's life when her menstruation stops and she is no longer fertile (able to become pregnant). In the UK the average age for the menopause is 52 (National Health Service), while in the USA it is 51 (National Institute of Aging). About one fifth of women in India experience menopause before the age of 41, a study found. The menopause is a normal part of like - it is a milestone, just like puberty - it is not a disease or a condition. Even though it is the time of the woman's last period symptoms may begin many years earlier. Some women may experience symptoms for months or years afterwards.

According to Medilexicon's medical dictionary, the menopause is the "Permanent cessation of the menses due to ovarian failure; termination of the menstrual life." (menses = shedding of blood during a woman's menstrual period). The peri-menopause is the 3 to 5 year period before the menopause when a woman's estrogen levels begin to drop. Let's recap the meaning of these two words:

* Menopause - when periods (menstruation) stop forever.
* Peri-menopause - the years before the menopause when estrogen levels start to drop.

News on Menopause

For the latest news and research on Menopause, and to sign up to newsletters or news alerts, please visit our Menopause News Section.
A study revealed that some British women are in denial when it comes to the menopause.
What are the symptoms of menopause and peri-menopause?
Experts say that technically the menopause is confirmed when a woman has not had a menstrual period for one year. However, the symptoms and signs of menopause generally appear well before the one-year anniversary of the final period. They may include:

* Irregular periods - this is usually the first symptom; menstrual pattern changes. Some women may experience a period every two to three weeks, while others will not have one for months at a time.

* Lower fertility - during the peri-menopausal stage of a woman's life her estrogen levels will drop significantly, lowering her chances of becoming pregnant.

* Vaginal dryness - this may be accompanied by itching and/or discomfort. It tends to happen during the peri-menopause. Some women may experience dyspareunia (pain during sex). The term vaginal atrophy refers to an inflammation of the vagina as a result of the thinning and shrinking of the tissues, as well as decreased lubrication, caused by a lack of estrogen. About 30% of women experience vaginal atrophy symptoms during the early post-menopausal period, while 47% do so during the later post-menopausal period. There are cases of women who experience vaginal atrophy more than a decade after their final period. The majority of post-menopausal women are uncomfortable talking about vaginal dryness and pain and are reluctant to seek medical help, a study found.

Interesting related articles

What is osteoporosis? What causes osteoporosis?

What is menstruation? What are periods?
* Hot flashes (UK term: hot flushes) - this is a sudden feeling of heat in the upper body. It may start in the face, neck or chest, and then spreads upwards or downwards (depending on where it started). The skin on the face, neck or chest may redden and become patchy, and the woman may start to sweat. The heart rate may suddenly increase (tachycardia), or it may become irregular or stronger than usual (palpitations). Hot flashes generally occur during the first year after a woman's final period.

* Night sweats - if the hot flashes happen in bed they are called night sweats. Most women say their hot flashes do not last more than a few minutes.

* Disturbed sleep - sleeping problems are generally caused by night sweats, but not always. Sleep disturbance may be caused by insomnia or anxiety. Difficulty falling asleep and staying asleep increase as women go through menopause, this study revealed.

* Urinary problems - women tend to be more susceptible to lower urinary tract infections, such as cystitis. Having to urinate may also occur more frequently.

* Moodiness - this often goes hand-in-hand with sleep disturbance. Experts say that most mood disturbances are triggered by poor sleep.

* Problems focusing and learning - Some women may also have short-term memory problems, as well as finding it hard to concentrate on something for long. A very large study found that women may not be able to learn as well shortly before menopause compared to other stages in life.

* More fat building up in the abdomen.

* Hair loss (thinning hair).

* Loss of breast size

If left untreated, these symptoms will usually taper off gradually over a period of two to five years. However, some women may experience symptoms for much longer. Most women who experience vaginal dryness, itching or discomfort may find symptoms either persist or get worse with time if left untreated.
What causes the menopause and peri-menopause?
The hormones estrogen and progesterone regulate menstruation - more specifically, estrogen regulates menstruation while progesterone is more involved with preparing the body for pregnancy. When the ovaries start producing less of these two hormones the peri-menopause will start. In fact, by the time a woman is in her late 30s the ovaries start producing less progesterone and estrogen. By the time she is n her 40s the post-ovulation spike in progesterone becomes less emphasized. A woman's fertility starts to decline a long time before she may notice any menopausal or peri-menopausal symptoms.

As time passes and the ovaries produce less and less estrogen and progesterone the ovaries eventually shut down completely and the woman no longer has any more menstrual periods. The vast majority of women experience a gradual change in menstrual activity, while some go on normally until they suddenly stop.

Some women may experience premature menopause - their ovaries fail earlier than they are supposed to (before the age of 45). Ovarian failure can occur at any age - but very rarely - and often the doctor and patient will never find out why. Some women who experience ovarian failure may still have periods and some degree of fertility for a while. Premature menopause may be caused by:

* Enzyme deficiencies

* Down's syndrome

* Turner's syndrome

* Addison's disease

* Hypothyroidism

* Removal of the ovaries (bilateral oophorectomy surgery)

* Radiotherapy to the pelvic area

* Chemotherapy

* Hysterectomy surgery (the uterus - womb - is surgically removed)

* Some infections - such as mumps or TB (tuberculosis), malaria and varicella. However, in all cases risk of ovarian failure is extremely small.

* Genetic factors - scientists have been able to identify genetic factors that influence the age at which natural menopause occurs in women, as explained in this article.

* Being a twin - twins are more likely to have a premature menopause than other women, a study found.

How is menopause diagnosed?
A GP (general practitioner, primary care physician) should be able to diagnose menopause or peri-menopause if he knows the age of the patient, has information about her menstrual patterns, and receives feedback from her on her symptoms.

Apart from a blood test which can measure levels of FSH (follicle-stimulating hormone), there is no definitive test to diagnose menopause or peri-menopause. FSH blood levels rise when a woman is in the menopause. However, as FSH levels tend to fluctuate a lot during the menopause and peri-menopause, a FSH blood test may provide a little data, but may not be that helpful for a diagnosis. Under certain circumstance a doctor may order a blood test to determine the level of estradiol (estrogen). As hypothyroidism (underactive thyroid) can cause menopause-like symptoms, the doctor may order a blood test to determine the woman's level of thyroid-stimulating hormone.
What is the treatment for menopause or peri-menopause?
According to the National Health Service, UK, only about 10% of women seek medical advice during the menopause. Many women require no treatment. However, if symptoms are affecting the woman's daily life she should see her doctor. The kind of treatment the patient should have depends on her symptoms, her medical history, as well as her own preferences. Available treatments include:

* HRT (hormone replacement therapy) - this is very effective for many of the symptoms that occur during the menopause, including vaginal dryness, vaginal itching, vaginal discomfort, urinary problems, bone-density loss, hot flashes and night sweats. HRT tops up the woman's levels of estrogen. However, as with many treatments, HRT has its risks and benefits:

Benefits of HRT

o Effectively treats many troublesome menopausal symptoms.
o Helps prevent osteoporosis.
o Lowers colorectal cancer risk (cancer of the colon or rectum)

Risks of HRT

o Raises breast cancer risk
o Raises ovary cancer risk
o Raises uterine cancer risk (cancer of the womb)
o Raises coronary heart disease risk
o Raises stroke risk
o HRT was found to slightly accelerate loss of brain tissue in areas important for thinking and memory among women aged 65 and over, according to a study.

A quote from http://www.medicalnewstoday.com/articles/136655.phpan interesting article, "Not all women need HRT, but many with troublesome symptoms were needlessly scared away from that option due to misunderstandings about the actual risks associated with it."

Older women who take hormone therapy to relieve menopausal symptoms may get the added benefit of reduced body fat if they are physically active, a study revealed.

* Low-dose antidepressants - SSRIs (selective serotonin reuptake inhibitors) have been shown to decrease menopausal hot flashes. Drugs include venlafaxine (Effexor), fluoxetine (Prozac, Sarafem), paroxetine (Paxil, others), citalopram (Celexa) and sertraline (Zoloft).

* Omega 3s - Researchers from the Universite Laval's Faculty of Medicine found that Omega-3s ease psychological distress and depressive symptoms often suffered by menopausal and peri-menopausal women.

* Gabapentin (Neurontin) - this medication is effective in treating hot flashes. It is commonly used for treating seizures (epilepsy).

* Clonidine (Catapres) - can be taken either orally as a pill or placed on the skin as a patch. It is effective in treating hot flashes. The drug is commonly used for treating high blood pressure (hypertension). However, unpleasant side-effects are common.

* Osteoporosis treatments - go to this article "What is osteoporosis?" which has a section on treatments.

* Vaginal estrogen - may be applied locally using a tablet, ring or cream. This medication effectively treats vaginal dryness, discomfort during intercourse, as well as some urinary problems. A small amount of estrogen is released and absorbed by the vaginal tissue.

* Soybeans - soy aglycons of isoflavone (SAI), a group of soybean constituent chemicals, have been shown to promote health in a rat model of the menopause, according to a study by scientists at National Chiayi University, Taiwan.

* Exercise - a study found that slow exercise is better for post-menopausal women than fast exercise.

Complications
After the menopause it is common for the following chronic conditions to appear. Chronic, in medical English, means long-term, continuous (as opposed to "acute").

* Cardiovascular disease - a drop in estrogen levels often goes hand-in-hand with an increased risk of cardiovascular disease. Heart disease is not exclusively a male problem, it is the main cause of death among both men and women. In order to reduce the risk of developing cardiovascular disease a woman should quit smoking, try to keep her blood pressure within normal levels, do plenty of regular exercise, sleep at least 7 hours each night, and eat a well-balanced healthy diet.

* Osteoporosis - a woman may lose bone density rapidly during the first few years after menopause. The lower a person's bone density gets the higher their risk is of developing osteoporosis. For more information on osteoporosis, go to "What is osteoporosis?". The absolute risk of a second clinical fracture is highest in the five years after any first clinical fracture for post-menopausal women, a study found.

* Urinary incontinence - the menopause causes the tissues of the vagina and urethra to lose their elasticity, which can result in frequent, sudden, strong urges to urinate, followed by urge incontinence (involuntary loss of urine - peeing by mistake). Stress incontinence may also become a problem - urinating involuntarily after coughing, sneezing, laughing, lifting something, or suddenly jerking the body as may happen when we temporarily lose our balance.

* Low libido - this is probably linked to disturbed sleep, depression symptoms, and night sweats, a study found.

* Overweight/obesity - during the menopausal transition women are much more susceptible to weight gain. Experts say women may need to consume about 200 to 400 fewer calories each day just to prevent weight gain - or burn of that number of calories each day with extra exercise. The chances of becoming obese rise significantly after the menopause, according to this article.

* Breast cancer - women are at a higher risk of breast cancer after the menopause. However, as this article explains, regular exercise after menopause significantly reduces breast cancer risk.

Self help
Unless your symptoms are severe, you may find that some changes in your lifestyle and diet are all you need to deal with the symptoms.

* Hot flashes and night sweats

o Do plenty of exercise.
o Avoid wearing tight clothing.
o Make sure the bedroom is not hot.
o Try to reduce your levels of stress.
o Remember the following commonly trigger symptoms for susceptible people: spicy food, caffeine, smoking, and alcohol.

* Sleep disturbance

o Exercise regularly. However, do not exercise too late during the day. Exercising too late may keep you awake longer.
o Go to bed and get up at the same time each day - even during weekends.
o Cut out all drinks and foods that contain caffeine.
o Learn how to do deep breathing, guided imagery, and progressive muscle relaxation.

* Moodiness

o Make sure you do not get tired - get plenty of rest.
o Do regular exercise. If you can, do strenuous exercise - check with your doctor whether this is OK for you.
o Practice yoga. Make sure you have a well qualified trainer.

* Vaginal discomfort and dryness

o Get some OTC (over the counter) water-based vaginal lubricants or moisturizers.
o Stay sexually active.

* Urinary incontinence

Practice pelvic floor muscle exercises - Kegel exercises. If you practice three or four times a day you will most probably notice a difference after a few weeks. This review of studies explains that women suffering from urinary incontinence can benefit from pelvic floor muscle training.

* Overweight/obesity and osteoporosis prevention

Eat a well balanced diet that includes plenty of vegetables, fruits, wholgrains, good quality fats, fiber, and unrefined carbohydrates. Try to consume 1,200 to 1,500 milligrams of calcium and 800 IUs of vitamin D per day. Do plenty of exercise. Make sure you sleep at least 7 hours each night.

Written by Christian Nordqvist

Jun 29
Dietary Fat, Especially From Red Meat, Dairy, Linked To Pancreatic Cancer
New research from the US that studied the diet and health outcomes of over half a million people suggests that high consumption of dietary fat, especially from red meat and dairy food, is linked to an increased risk of pancreatic cancer.

However, some experts suggest that while this is a good study that contributes to our understanding of the disease, it does not prove a link with animal fats per se (it could be some other dietary or lifestyle factor that is common to people who eat lots of animal fat) and that more work is needed before we can be sure.

The study was the work of Dr Rachael Z Stolzenberg-Solomon, from the Division of Cancer Epidemiology and Genetics at the National Cancer Institute in Bethesda, Maryland, and colleagues and was published in the advanced access online issue of the Journal of the National Cancer Institute on 26 June 2009.

In their background information, Stolzenberg-Solomon and colleagues wrote that they decided to carry out the investigation because up to now research on the link between pancreatic cancer and dietary fat, a risk factor that people can do something about, has been inconclusive.

For this prospective study (ie one that follows a certain group over a period of time) the researchers used data from the National Institutes of Health AARP Diet and Health Study, a large US-based group of 308,736 men and 216,737 women aged 50-71 years who filled in a 124-item food frequency questionnaire in during 1995 and 1996.

The group was then followed for an average of 6.3 years to see what happened to their health, including whether any were diagnosed with pancreatic cancer.

After that, the researchers used statistical tools to search for any links between fat consumption, including different types of fat and where it came from, and pancreatic cancer, while taking into account potential confounders like smoking/not smoking, body mass index (BMI), and diabetes.

The key results showed that:

* 865 men and 472 women developed pancreatic cancer (an incident rate 45.0 and 34.5 cases per 100 000 person-years, respectively).

* Men and women with the highest total fat consumption were 53 per cent and 23 per cent more likely to receive a pancreatic cancer diagnosis than with men and women with the lowest fat consumption.

* There were positive links between pancreatic cancer and intakes of total, saturated and monounsaturated fat overall.

* The links were strongest for those whose fat came primarily from red meat and dairy foods.

* Those who consumed high levels of saturated fats had were 36 per cent more likely to develop pancreatic cancer than those who consumed low levels.

The authors wrote that:

"We did not observe any consistent association with polyunsaturated or fat from plant food sources."

They concluded:

"In this large prospective cohort with a wide range of intakes, dietary fat of animal origin was associated with increased pancreatic cancer risk."

"Altogether, these results suggest a role for animal fat in pancreatic carcinogenesis," they wrote.

In an editorial in the same issue of the journal, Drs Brian M. Wolpin from the Dana Farber Cancer Institute in Boston, and Meir J Stampfer from the Harvard School of Public Health, also in Boston, said this was a well-performed study that contributed to our understanding of pancreatic cancer, but there wasn't enough information to be sure that it was animal fats or fat from red meat that was linked to pancreatic cancer and not something else that is common to people who eat lots of red meat and animal fats.

Jun 27
Examines Effects Of Maternal Mortality On Infants In Tanzania
The New York Times on Thursday examined the effects of maternal mortality on infants in Tanzania, many of whom live in village orphanages after their mothers' deaths. The article is the last in a three-part series on pregnancy- and childbirth-related deaths in the country.

The Times reports that 250,000 women die annually during pregnancy or childbirth in Africa as the result of bleeding, infection, high blood pressure, prolonged labor and botched abortions. Although many of these problems can be treated or prevented with basic obstetrical care, Tanzania has too few physicians, nurses and drugs -- and is short on equipment, ambulances and paved roads -- to address the issue.

Women who die during pregnancy often are survived by their infants. The newborns do not have access to breastmilk, and formula and baby food are not widely available in the country. To avoid malnutrition and infection, the infants often are taken to orphanages that can provide basic care until they reach age two or three, and then they are returned to their extended families.

Jun 27
New Gene Discovery Links Obesity To The Brain
A variation in a gene that is active in the central nervous system is associated with increased risk for obesity, according to an international study in which Albert Einstein College of Medicine of Yeshiva University played a major role. The research adds to evidence that genes influence appetite and that the brain plays a key role in obesity.

Robert Kaplan, Ph.D., associate professor of epidemiology & population health, helped direct the international study, which involved 34 research institutions and is published online in PLoS Genetics. Dr. Kaplan and his U.S. and European colleagues found that people who have inherited the gene variant NRXN3 have a 10-15 percent increased risk of being obese compared with people who do not have the variant.

The researchers examined data from eight studies involving genes and body weight. These studies included more than 31,000 people of European origin, ages 45 to 76, representing a broad range of dietary habits and health behaviors.

After analyzing more than two million regions of the human genome, the researchers found that the NRXN3 gene variant previously associated with alcohol dependence, cocaine addiction, and illegal substance abuse also predicts the tendency to become obese. Altogether, researchers found the gene variant in 20 percent of the people studied.

"We've known for a long time that obesity is an inherited trait, but specific genes linked to it have been difficult to find," says Dr. Kaplan. "A lot of factors the types and quantity of foods you eat, how much you exercise, and how you metabolize foods, for example affect your body shape and size. So we are looking for genes that may have a small role to play in a complex situation."

NRXN3 is the third obesity-associated gene to be identified. The fact that all three genes are highly active in encoding brain proteins is significant, says Dr. Kaplan. "Considering how many factors are involved in obesity, it is interesting that research is increasingly pointing to the brain as being very important in its development," he said.

Identifying obesity genes could help in preventing the condition and lead to treatments for it. "Someday we may be able to incorporate several obesity genes into a genetic test to identify people at risk of becoming obese and alert them to the need to watch their diet and to exercise," Dr. Kaplan said. "Also, we may eventually see drugs that target the molecular pathways through which obesity genes exert their influence."

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