3rd Nov 2015, 12:44 PM #2211
Re: Health Bulletin
Vitamin D pill may improve exercise performance
Taking vitamin D supplements can improve exercise performance and lower the risk of heart disease, said a new study.
Vitamin D — which is both a vitamin and a hormone — helps control levels of calcium and phosphate in the blood and is essential for the formation of bones and teeth.
"Our study suggests that taking vitamin D supplements can improve fitness levels and lower cardiovascular risk factors such as blood pressure," said study co-author Raquel Revuelta Iniesta from Queen Margaret University in Edinburgh.
In this study, researchers gave Vitamin D per day or a placebo over a period of two weeks to 13 healthy adults matched by weight 50 kg.
Adults supplementing with vitamin D had lower blood pressure compared to those given a placebo, and had lower levels of the stress hormone cortisol in their urine.
A fitness test found that the group taking vitamin D could cycle 6.5 km in 20 minutes, compared to just five km at the start of the experiment.
Despite cycling 30 percent further in the same time, the group taking vitamin D supplements also showed lower signs of physical exertion.
Previous studies suggest that vitamin D can block the action of enzyme 11-IHSD1, which is needed to make the "stress hormone" cortisol.
As Vitamin D may reduce circulating levels of cortisol, it could theoretically improve exercise performance and lower cardiovascular risk factors, the researchers explained.
The findings are scheduled to be presented at the ongoing Society for Endocrinology annual conference in Edinburgh.
3rd Nov 2015, 12:46 PM #2212
Re: Health Bulletin
Now, heartbeats to power pacemakers
Scientists are developing next-generation battery-free implantable pacemakers that may be powered by an unlikely source -the heart itself. The advancement is based upon a piezoelectric system that converts vibrational energy -created inside the chest by each heartbeat -into electricity to power the pacemaker.
"Essentially, we're creating technology that will allow pacemakers to be powered by the very heart that they are regulating," said M Amin Karami, assistant professor of mechanical engineering at the University at Buffalo School of Engi neering and Applied Sciences, who is leading the research. The technology may eliminate the medical risks, costs and inconvenience of having a battery replacement every five to 12 years for millions of people worldwide, researchers said.
About the size of a pocket watch, pacemakers are implanted under the skin through an incision in the chest. Wires, also called leads, connect the device to the heart and deliver electrical signals that regulate the heart's activity.
The new wireless option does not require leads because it rests inside the heart.
This removes a potential point of failure, but the device still relies on a battery that must be replaced as often as the batteries that conventional pacemakers use.
The idea of heart-powered pacemakers came to Karami after doing PhD work on piezoelectric applications for unmanned aerial vehicles and bridges. He wanted to apply that knowledge to the human body. The heart was an obvious choice because of its relative strength and constant motion.
"To see the heart in motion -even an animation -is to be awestruck. It moves significantly. In turn, that movement The advancement is based upon a piezoelectric system that converts vibrational energy -created inside the chest by each heartbeat - into electricity to power the pacemaker creates energy that we're just now figuring out how to harvest," said Karami.
Karami initially designed a flat piezoelectric structure for a conventional pacemaker. A prototype generated enough power to keep the pacemaker running at a range of 7 to 700 beats per minute. With the development of wireless pacemakers, however, he has revamped the design to accommodate the smaller, tube shaped device.
Karami, who is already talking to device-makers, is building the new prototype and expects to have animal tests done within two years.
3rd Nov 2015, 05:59 PM #2213
Re: Health Bulletin
"எதிர்மறை எண்ணங்களால் பல நோய்கள் ஏற்படும்'
மனதில் தோன்றும் எதிர்மறை எண்ணங்கள் பல நோய்களுக்கு காரணமாவதாக என டாக்டர் எம்.ஜி.ஆர். மருத்துவப் பல்கலைக்கழகத்தின் சிறப்பு இருதயவியல் பேராசிரியர் வி.சொக்கலிங்கம் கூறினார்.
குரோம்பேட்டை ஸ்ரீபாலாஜி மருத்துவக் கல்லூரியில் அண்மையில் நடைபெற்ற சர்வதேச சோரியாசிஸ் (செதில் உதிர் நோய்) கருத்தரங்கைத் தொடக்கிவைத்து, அவர் பேசியதாவது: மனதில் தோன்றும் எதிர்மறை எண்ணங்கள், மனஅழுத்தம் ஆகியன இருதய நோய், மாரடைப்பு, பக்கவாதம், குடல் புண், ஆஸ்துமா, சோரியாசிஸ், புற்றுநோய் ஆகிய நோய்களுக்குக் காரணிகளாகத் திகழ்வது கண்டறியப்பட்டுள்ளது. இதனால், இருதயத்தைப் பாதுகாத்துக் கொள்வது அவசியம் என்றார்.
பிலிப்பின்ஸ் தோல் நோய் ஆராய்ச்சி மையத் தலைவர் தெரசிட்டா ஜி.கபிரியேல் பாரிஸ் செயிண்ட் லூயி மருத்துவப் பல்கலைக்கழகப் பேராசிரியர் எல்.டூபர்ட்ரெட்,பிரிட்டன் மெட்வே மெடிக்கல் பவுண்டேஷன் தோல் மருத்துவர் டாக்டர் சவுல் ஹால்பர்ன், திலலி சாரதா மருத்துவ ஆராய்ச்சி மையம் பேராசிரியர் ஏ.ஜெ.கன்வார், அப்பல்லோ மருத்துவமனை முடநீக்கியல் துறை மருத்துவர் பி.ராஜசேகர், ஸ்ரீபாலாஜி மருத்துவக் கல்லூரி தோல் நோய் மருத்துவத் துறைத் தலைவர் பேராசிரியர் ஜெயகர் தாமஸ், கருத்தரங்குச் செயலர் டாக்டர் டி.மனோகரன் உள்ளிட்டோர் பங்கேற்றனர்.
3rd Nov 2015, 06:03 PM #2214
Re: Health Bulletin
செல்லப் பிராணியான நாய்களுடன் வளரும் குழந்தைகளுக்கு ஆஸ்தும் நோய் பாதிப்பு ஏற்படும்: ஆய்வில் தகவல்
வீட்டில் வளர்க்கப்படும் செல்லப் பிராணியான நாய்களுடன் வளரும் குழந்தைகளுக்கு ஆஸ்தும் நோய் பாதிப்பு ஏற்படுவதாக புதிய ஆய்வறிக்கை தெரிவித்துள்ளது.
இதுகுறித்து அந்த அறிக்கையில் தெரிவிக்கப்பட்டுள்ளதாவது: - ஒரு மில்லியன் குழந்தைகளுடன் இந்த ஆய்வு நடத்தப்பட்டது.
அதன்படி செல்லப்பிராணிகளுடன் அல்லாமல் வளரும் குழந்தைகளை விட செல்லப்பிராணிகளுடன் வளரும் குழந்தைகளுக்கு 15 சதவீதம் அதிகமாக ஆஸ்துமா நோய் பாதிப்பு ஏற்பட்டிப்பது கண்டறியப்பட்டது.
சுவிடன் நாட்டில் 2001 ஆம் ஆண்டில் இருந்து நாய் உரிமையாளர்கள் பதிவு செய்வது கட்டாயமாக்கப்பட்டது. எனவே இது இந்த ஆய்வுக்கு உதவியாக இருந்தது.
மேலும் இந்த ஆய்வின் முடிவு குழந்தை மருத்துவத்துகான ஜேர்னல் ஆன பிடியாட்ரிகில் வெளியிடப்பட்டுள்ளது.
இந்த ஆய்வு முடிவின் வெளியீட்டு மூலம் எதிர்காலத்தில் நாய்களுடன் சேர்ந்து வளரும் குழந்தைகளுக்கு ஆஸ்துமா வருவதை தடுப்பதற்கான விழிப்புணர்வை ஏற்படுத்த முடியும் என மூத்த கரோலின்ஸ்கா இன்ஸ்டியூட்டின் மூத்த ஆய்வாளர் கத்ரீனா அல்ம்க்விஸ்ட் கூறினார்.
6th Nov 2015, 06:14 PM #2215
Re: Health Bulletin
Indians’ poor food habits fuelling diabetes: Survey
What Indians eat and how could be fueling the diabetes epidemic across the country, suggests a new survey that interviewed 4,000 diabetic patients across eight cities.
The main culprit could be the Indian craving for rice, fine-flour rotis or upma - all carbohydrate-based foodstuff high on calories but low on much-needed fibre. "Rice accounts for 48% of the daily calorific intake of most Indians,'' said endocrinologist Dr V Mohan from Chennai. Considering that most types of white rice rapidly increase the blood sugar levels, caution is advised.
But urban Indians who suffer from diabetes seem far from cautious. The new survey, titled Food, Spikes and Diabetes Survey, showed seven out o f 10 people with diabetes in urban India paid little attention to what and how much they eat. Carbohydrates are supposed to comprise only 60% of the plate, but 70% of those surveyed in Mumbai and 84% of those in Chennai consumed more.
There is also a problem with how Indians eat. "Indians tend to eat so fast that the pancreas struggles to produce adequate insulin for metabolising the food,'' said Dr Shashank Joshi, president of the Indian Academy of Diabetes.
Indian diabetic patients also fail to observe healthy gaps between meals, said Dr Joshi. The survey, for instance, shows that Mumbaikars have their breakfast two hours and 25 minutes after waking up, and Hyderabadis wait over three hours. "Eighty percent of respondents eat three to four meals per day. The gap between meals ranges from four-and-a-half to seven hours,'' said the findings.
"Typically, Indians have a three to four hour gap between wake-up time and breakfast, which is detrimental for these patients. Therefore, they should have a shorter time gap with breakfast comprising whole grains,'' said Dr Joshi.
Indians also have a tendency to feast in festivals. "Indians take festive occasions seriously and people with diabetes seem to follow the trend-30% of respondents claimed to go easy on their diet in festive occasions. The survey, conducted by pharma major Abbot, showed 62% of those interviewed had a body mass index of over 22.9 and 65% had uncontrolled blood sugar levels.
6th Nov 2015, 06:16 PM #2216
Re: Health Bulletin
6th Nov 2015, 06:36 PM #2217
Re: Health Bulletin
In a first, tapeworm spreads tumours to man
Stunned scientists described the first known case of a man infected with tumours by a common parasitic tapeworm, raising concern about more such infections that may go undetected.
"We were amazed when we found this new type of disease -tapeworms growing inside a person essentially getting cancer that spreads to the person, causing tumours," said Atis Muehlenbachs, staff pathologist in the US Centers for Disease Control and Prevention's Infectious Diseases Pathology Branch. "We think this type of event is rare. However, this tapeworm is found worldwide and millions of people globally suffer from conditions like HIV that weaken their immune system. So there may be more such unrecognized cases," said Muehlenbachs, lead author of the study in the New England Journal of Medicine.
The case involved a 41-yearold man in Colombia. He was HIV-positive and not been taking medications when in 2013, he went to his doctors with a cough, fever and complaints of weakness and weight loss. His doctors took biopsies from his lymph nodes and lung tumours, and appealed to the CDC for help in diagnosing some bizarre-looking lesions which looked like human cancer, but initial lab tests showed they were not human.
Puzzled, scientists kept searching for the cause of the man's disease. "The growth pattern was decidedly cancer like, with too many cells crowded into small spaces and quickly multiplying," the CDC said in a statement. "But the cells were tiny -about 10 times smaller than a normal human cancer cell. The researchers also noticed cells fusing together, which is rare for human cells."
After dozens of tests, they found DNA from Hymenolepis nana, the dwarf tapeworm, in the man's tumour in mid-2013.The man died soon after.
The dwarf tapeworm is the most common tapeworm in humans, and infects up to 75 million people at any given time. People can get it by eating food that has mouse feces on it, or ingesting feces from an infected person. It often affects children, and many people show no symptoms.
26-year-old is saved in the nick of time
A California man says he went to an emergency room with a terrible headache and nausea, slipped into a coma, and was told a tapeworm larva had been living in his brain when he woke up. Luis Ortiz, a 26-year-old student, said doctors told him he needed immediate surgery to remove it. " I couldn't believe something like that would happen to me. I didn't know there was a parasite in my head trying to ruin my life," Ortiz said. The surgery and the aftermath have greatly impacted his life, Ortiz said. He had to drop out of school, move back home and find a temporary place for his dog. He can't drive or work. "My memory is like a work in progress. It gets better from therapy," Ortiz said. His neurosurgeon, Dr Soren Singel, said Ortiz was lucky he arrived at the hospital when he did. The worm was forming in a cyst that was blocking the flow of water to chambers in his brain, "like a cork in a bottle," Singel said. Another 30 minutes of that blockage, and "he would have been dead, it was a close call", Singel said.
7th Nov 2015, 11:07 AM #2218
Re: Health Bulletin
Nutritional Vitamin D improves vascular function: Study
Nutritional Vitamin D supplementation improves the vascular function and reduces inflammation in early stage of chronic kidney disease, a study has revealed.
It stated that no other medicine has proper effect in the inflammation of kidneys or any other problems related to it.
In a randomised controlled trial under direct supervision of the researchers, two ground were created of 60 patients each.
One group was given two doses of 300,000 units of Vitamin D for eight weeks while the patients in the other group were given matching placebo.
A placebo is anything that seems to be a "real" medical treatment -- but isn't. It could be a pill, a shot, or some other type of "fake" treatment.
The study was conducted by researchers from the George Institute for Global Health, New Delhi and the Postgraduate Institute of Medical Education and Research (PGIMER), Chandigarh.
It was presented at the American Society of Nephrology Kidney Week 2015 (November 3-8) in San Diego.
Several parameters of vascular function and biomarkers to measure status of inflammatory and immune activation were studied at baseline and after 16 weeks, Vitamin D levels increased in patients in the first treatment group whereas there was no change in the second group.
"About 70 percent of patients receiving Vitamin D demonstrated significant improvement in their vascular functions and improvement in biomarkers indicating reduction in the level of inflammatory and immune activation," said Vivekanand Jha, the executive director of the George Institute for Global Health who led the study.
Jha said that in the placebo arm only five percent patients showed improved vascular function and there was no change in the inflammatory and immune markers.
Vivek Kumar, nephrologist at PGIMER and the first author of the study, said: "Vitamin D deficiency is common in patients with chronic kidney disease. Our study shows that simply identifying and correcting this abnormality has the potential to improve the outcomes in these patients."
Jha added: "About one in 10 people suffer from chronic kidney disease around the world. Most of these patients are destined to develop premature cardiovascular disease, hence mitigation of this risk is an important therapeutic goal."
9th Nov 2015, 01:30 PM #2219
Re: Health Bulletin
Just a handful of walnuts can boost male fertility
A simple way to boost male fertility, a major problem across the world, could be gobbling a handful of walnuts, researchers say.
"The initial research we conducted regarding walnuts and male fertility found improvement in sperm parameters after adding walnuts to the diet and has set the stage for us to further explore the impacts of walnuts on male fertility and reproductive health," said professor Wendie Robbins of the UCLA School of Nursing.
"New projects are underway that we hope to be able to share with you in the near future," she said. Infertility and subfertility affect a significant proportion of humanity and the burden in men is relatively unknown. Infertility is defined as a "disease of the reproductive system" and results in disability. Commenting on the study in 2012, Robbins said that 75 grams of walnuts consumed daily improved sperm vitality, motility, and morphology in a group of healthy young men between 21-35 years of age.
These findings are of particular interest to the over 70 million couples worldwide who experience sub-fertility.In fact, 30 to 50% of these cases are attributed to the male partner. Walnuts are the only nut that are an excellent source of alpha-linolenic acid.
9th Nov 2015, 01:37 PM #2220
Re: Health Bulletin
Vegetable oils contain 'toxic' chemicals, scientists say
Cooking with vegetable oil releases toxic chemicals linked to cancer and even the degeneration of the brain, according to experts.
Lard, butter, coconut and olive oil are all better dietary choices, leading scientists have said - in advice which directly contradicts the NHS.
When heated, corn, sunflower, palm and soya bean oils - often called "vegetable" oils - release chemicals called aldehydes which have been linked to various cancers and neurogenerative diseases such as Alzheimer's.
Martin Grootveld, a professor of bioanalytical chemistry and chemical pathology at DeMontfort University,said that a meal fried in vegetable oil such as fish and chips contains 100 to 200 times more aldehydes than the daily limit set by the World Health Organisation (WHO), according to the Daily Telegraph.
Using butter, olive and lard in the frying pan, however, was found to produce much lower levels of aldehydes - with coconut oil coming out as healthiest.
Yet the NHS has long warned against cooking with butter and lard. The NHS choices website advises:
"Try to cut down on foods that are high in saturated fat and have smaller amounts of foods that are rich in unsaturated fat instead.
"For a healthy choice, use just a small amount of vegetable oil or reduced fat spread instead of butter, lard or ghee."
Yet vegetable oil has been linked to heart disease, cancer, inflammation, rising blood pressure and mental health.
And the omega 6 fatty acids present in vegetable oils are pushing out the important omega 3 fatty acids that keep the brain healthy, according to Professor John Stein, emeritus professor of neuroscience at Oxford University.
"If you eat too much corn oil or sunflower oil, the brain is absorbing too much omega 6, and that effectively forces out omega 3," Prof Stein said according to the Daily Telegraph.
"I believe the lack of omega 3 is a powerful contributory factor to such problems as increasing mental health issues and other problems such as dyslexia."
The issue had not received enough attention by health organisations or the food industry, experts added.
Olive oil, meanwhile, has been repeatedly linked to health benefits.