It may be a confounding variable in studies of air pollution or other causes of disease.
In Shenzhen, the Nebulae, which is still being tested, is expected to improve storm warning systems and help genetics companies search for the causes of disease.
Researchers also hope that stem cell research will provide them with more information about human development and the causes of disease, and lead to changes in the development and testing of drugs.
In contrast to the body of research focusing on the causes of heart disease, studies of smoking bans generally compare hospital admissions for heart attack before and after a smoking ban.
These were ground-breaking studies that have yielded important new knowledge about the causes of heart disease and of chronic diseases among women, respectively.
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Belinda Linden, a nurse advisor for the British Heart Foundation, said that more research was needed into possible genetic causes of heart disease.
To be sure, plenty of obese people never develop diabetes, and plenty of fit people do: the causes of the disease are not purely behavioural.
He indicated smoking and unhealthy diets are know causes of heart disease and explained that the investigation needed to look into why people living in poorer areas are were more likely to live unhealthy lifestyles.
There are others, but if we look at the one that is most pervasive and causes the largest number of disease in this country, lung cancer is rising and it's rising because we have not been able to get this cancer-causing agent off the street.
Polymeropoulos, when he was at the U.S. National Institutes of Health, pinpointed a gene that causes a rare inherited form of the disease by spawning mutations in a protein called alpha-synuclein.
This pattern held when the researchers broke out the data by specific causes of death, including heart disease, lung disease, pneumonia, stroke, diabetes, infections, and even injuries and accidents.
The hormone was prepared from human pituitary glands recovered from cadavers, and the absence of rigorous collection guidelines and purification procedures permitted contamination of the formulated drug with the agent that causes Creutzfeldt-Jacob disease, the human equivalent of "mad-cow disease, " or bovine spongiform encephalopathy (BSE).
Although he and his colleagues propose that bowel disease causes autism, in four of his 12 cases the children's behavioural problems preceded their bowel disease, an observation that clearly contradicts the hypothesis.
In no way does it show that consuming sugar-sweetened beverages causes chronic diseases such as diabetes, cardiovascular disease or cancer - the real causes of death among the studied subjects.
It also reduces cytotoxicity--that is, the killing of cells, which causes heart disease--by 18%.
The scientists suggest that too much of the hormone causes inflammation and disease.
Data relating to disease prevalence or causes of death are published only patchily.
Big drug firms like Wyeth, Elan and Eli Lilly have spent years pursuing drugs based on the theory of what causes Alzheimer's disease.
In 2006 researchers from the Hebrew University in Israel isolated a variant of the virus that causes Newcastle disease, a highly contagious disease in birds that can kill.
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Lawyer Lesley Mynett, of Fentons Solicitors, said Mr Ball's case "paves the way for further elderly sufferers to receive settlements which reflect the pain and distress the disease causes, regardless of their age".
He concluded that Mr Tomlinson died of natural causes linked to coronary artery disease.
The big challenge is tackling the root causes and consequences of obesity such as heart disease and diabetes.
To raise international awareness of the disease's causes, development and cures, the WHO declared March 24 World TB Day.
Some of the damage the disease causes to brain neurons that make the neurotransmitter dopamine also occur in the gut neurons, researchers say.
"Thus, E-4 appears as a risk factor for both heart disease and Alzheimer's disease, two major causes of mortality and morbidity at advanced ages, " Francois Schachter and his colleagues at the Center for the Study of Human Polymorphisms, a genetic-research center in Paris, conclude in a report.
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Dr Baigent said surveys in the UK have shown that aspirin is prescribed to less than a quarter of people with diseases such as peripheral arterial disease - a condition which causes fatty deposits to build up in the arteries of the leg, and which commonly leads to heart attacks or strokes.
Amanda Sandford, research manager for the organisation Action on Smoking and Health, said smoking tobacco causes a whole range of diseases such as heart disease, respiratory disorders and cancer, while using NRT as an aid to stopping has none of these risks.
Burning ethanol also releases large quantities of nitrogen oxide (smog) that causes respiratory disease.
Guillain Barre syndrome is a disease of the nervous system which causes numbness and weakness and a degree of paralysis.
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