Most people mind in research on weight, study says

Participants says higher and weigh less than the reality.
' Little lies ' are not sufficient to change pattern of obesity in the us. Most people mind when approached on the street to answer the questionnaires on weight, according to a study published in the journal "Ethnicity and Disease". The work also took into account when people were reporting the wrong time, trying to compensate for the weight with a larger stature.

Scientists at the University of Utah, in the United States, analyzed what surveys show about body mass index (BMI) of people. The IMC uses the height and weight of the people to know how much fat they have. Values above 25 indicates overweight and above 30 pointed out obesity (learn your BMI here).

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White people tend to lie more on the BMI values than black people or Hispanic descent. But the people of all ethnic groups claim weigh less and be taller than the reality.

The difference caused by the "lies" in the search result is only 1 point of BMI, which is little to change patterns of obesity in American territory, where the study was conducted.

But the error in the information make comparisons between different ethnic groups more difficult. Many researches on health take into account only the information passed by the people since putting them on top of a balance costs time and money.

On the comparison between sexes, white women are altering their real weight to be questioned on the subject. People over 60 years old, obese and people with university education are also more propensar lying in the polls.

The results show that censors must be more careful when comparing obesity data with demographic information, since the ethnic groups may be changing information on the IMC at different rates.

topics: United States see also different blood pressure in the arms may indicate risk of vascular disease British Study examined 28 scientific works about systolic pressure.Measurement of pressure must be made on both arms, argue scientists.

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Survey wants to know about world opinion genetic information

There is no consensus on data dissemination of research participants.
Result should guide medical behavior policies. The Wellcome Trust, a British organization that funds research in the biomedical area, launched a questionnaire to find out people's views on the use of genetic data obtained in surveys.

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The query comes to enrich the ethical debate about the work of researchers in the field of human genetics.

A study regarding a specific disease – for example, breast cancer – provides genetic data that can predict the risk of developing some other disease – Alzheimer's disease, for example. The researchers ' doubt is: scientists should inform patients about these minor discoveries? Today, there is a consensus in the medical community about what should be done.

"We need to understand what people want from research with the genome," said Anna Middleton, a researcher in the ethics of the Wellcome Trust Sanger Institute, on material released by the organization.

The questionnaire can be answered over the internet by anyone who has an interest, even if you don't have knowledge on genetics; simply access the site www.genomethics.org (in English). People from all over the world are invited to participate.

The organisers want this query provides the largest database now available on the subject and that it can be used to guide search policies.

"The policy is being written around the world about what the researchers must disclose in genome studies and a lot of it is based on intuition", completed Middleton.

rio of sisters breasts and uterus removed to avoid cancer that killed his mother

Deadly Gene detected in breast tumors cause British and ovaries.
Genetic defect makes that chances of breast tumor will reach 85%. Three British sisters underwent surgeries to remove the breasts after discovering that were carriers of a gene that killed the mother of them in 1986 on behalf of a breast cancer. To avoid genetic inheritance, two of them also withdrew the womb of their wombs and the third will go through the same operation soon. The information is of British papers "Daily Mail" and "The Sun".

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The mother died at the age of 32, in 1986. Nineteen years later, Luan has detected a lump within the if test the waters during the bath.

The examination confirmed that she had inherited the same problem of the mother. In July 2005, she removed the lump and went through six months of chemotherapy followed by four weeks of radiotherapy.

Even with successful treatment, doctors warned that Luan was a carrier of a gene that was the main responsible cause tumors. Afraid to also be carriers of the same genetic defect, the sisters Kim and Jemma blood tests were also in 2007.

Nasa discloses data on substance which surrounds the original Solar System

Ibex mission data correct the position of the Sun in space.
Level of oxygen and neon gas in the heliosphere is greater than abroad. The G1, in São Paulo

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The American Space Agency (Nasa) released data from unpublished observations of atoms surrounding the Solar System. Using the Ibex spacecraft, astronomers were able to capture the chemical elements from neighbouring regions and measuring the volume of these materials inside and outside the heliosphere, the "bubble" around the Sun that protects the Earth and other planets of cosmic rays.

The data were announced at a press conference held on the afternoon of Tuesday in Nasa's dependencies. Six studies on the results collected by the Ibex mission will be disclosed in the February issue of the magazine "the Astrophysical Journal", one of the main scientific publications on astronomy in the world.

The study showed the difference in rates of hydrogen, oxygen and neon gas within the zone of influence of the Sun and clouds of cosmic dust that surrounds the Solar System. A decade ago, another Nasa mission called Ulysses had already detected the atoms of Helium coming from outside the solar bubble.

Different blood pressure in the arms may indicate risk of vascular disease

British study examined 28 scientific works about systolic pressure.
Measurement of pressure must be made on both arms, argue scientists. The difference in pressure within the blood vessels in her arms left and right of a person may indicate increased risk of vascular disease and an increase in the odds of death, according to a study published in the online version of the medical journal "The Lancet" this week. The data relate only to the systolic pressure, which occurs when the heart contracts and the blood is pumped to the body.

The discovery made by a team of scientists from Uniersidade of Exeter, in the United Kingdom, shows that blood pressure measurements in routine exams should be done on both arms.

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Coordinated by the physician Christopher Clark, the researchers reviewed data from 28 scientific works about systolic pressure and found that a difference in measurement equal to or greater than 15 mm of mercury is linked to an increased risk of vascular diseases in the brain, legs and feet.

The results also showed an increase in the odds of death due to cardiovascular problems (70% more) and death from all causes (60%).

Doctors claim that no matter what pressure higher or lower arm features, but the difference between the pressure measured in both.

Preventive detection of vascular diseases is important so that doctors can alert patients about the need to drop the smoke, lowering the blood pressure levels or even offer treatments with Statins to reduce the risk of death.

But to be able to discover the problem without invasive examinations, the healthcare provider needs to experience and know how to take the pressure at the ankle and arms at rest or after effort. This training takes time and needs to be priority, according to the team responsible for the study, which will defend this urgency in training in the United Kingdom.

According to the authors, the difference of systolic pressure in both arms can serve to reveal which patients have increased risk of present health problems and guide the treatment of people with hypertension.

topics: United States see also neuron skin transforms Team without going through stem cell stage American scientists have succeeded in the done at experience with rats.Technique was described in the journal of the American Academy of Sciences.