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BRASILIA, April 26 (Xinhua) -- A survey conducted by Brazil's Ministry of Health showed Tuesday that half of Brazilians aged over 55 have hypertension.According to the research, which has been carried out annually since 2006, the proportion of Brazilians diagnosed with hypertension increased over the past five years, from 21.6 percent in 2006 to 23.3 percent in 2010.Besides, the diagnosis of hypertension is higher among women (25.5 percent) than men (20.7 percent). But in both sexes, the older people are, the more common the disease becomes, the ministry reported.The ministry also said that, to address the problem, the Brazilian government distributes free medicines to control blood pressure, since 80 percent of Brazilians who suffer from hypertension depend on the public health system.The Ministry of Health signed on April 7 an agreement with the food industry, aiming to reduce salt in processed food.If hypertension is left untreated, some complications including clogged arteries, stroke and myocardial infarction will bring patients more troubles.

LOS ANGELES, May 29 (Xinhua) -- Nineteen percent of

Google chairman Eric Schmidt has promised that the firm will simplify the process by which Android phone users agree to share their data.It follows questions in the US Senate about how much location information is stored by mobile handsets.Speaking in the UK at a conference on privacy, he also revealed that Google plans to offer web users more control over their online profile.Mr Schmidt insisted that the company took the matter "very seriously".He told attendees at the Big Tent debate in Hertfordshire that his firm was working on "a series of projects" aimed at increasing transparency.Those include a revised Google Dashboard, where users can see what data they have shared with the search giant."It is worth stressing that we can only do this with data you have shared with Google. We can't be a vacuum-cleaner for the whole internet," he said.Mr Schmidt stressed that Google was on the side of consumers when it came to privacy. "In general we take the position that you own your data and should be able to opt in or out of a service," he said.But he added that if users gave consent for sharing data, it would help Google improve its services."If you choose to give us that information we can do a better job. If we know a little bit more about you we can offer better targeted search," he explained.Super injunctions revealed A recent hearing in the US Senate quizzed Google on the amount of data stored on Android handsets. The company argued that it allows people to opt out of location-based services.But Mr Schmidt conceded that the terms and conditions whereby users sign up to services needs to be simplified. "We intent to do that," he said.He predicted that such services would be more heavily regulated in the future.During a lively debate on the issue of privacy, it was revealed to the Big Tent audience, alongside several names of current super-injunction holders, that more data has been collected in the last seven years than in the whole of previous human history.

SAN FRANCISCO, May 11 (Xinhua) -- Google on Wednesday introduced a series of notebook computers based on its Chrome operating system, stepping up its competition against Microsoft.Google unveiled the "Chromebook" at its annual developers conference in San Francisco, saying that the new devices, made by Acer and Samsung Electronics, will go on sale on June 15 in the United States and six European countries.Google said Chromebooks can boot in 8 seconds and its security system makes it require no virus protection. Applications, documents and setting will be stored in "the cloud," which enables users to have same experience after logging into another Chromebook. The system will get updated automatically with no update prompts.Acer's Chromebook will start at 349 U.S. dollars and Samsung's product will be priced at 429 dollars for its WiFi model and 499 dollars for 3G connectivity. The devices will be available online in the United States through Amazon.com and Best Buy's online store.Google on Wednesday also announced Chromebooks for Business and Education, a subscription service including Chromebooks and a cloud management console to remotely administer and manage users, devices applications and policies.Google said it will directly handle the business and education orders. The monthly fee will be 28 dollars per user for businesses and 20 dollars per user for educational customers.The Chrome operating system, announced in July 2009, is designed to work exclusively with web applications, with its work based on Google's Chrome web browser.On Wednesday's conference, Google said the Chrome web browser now has 160 million active users, compared to 70 million last May.

WASHINGTON, April 25 (Xinhua) -- Study by scientists at the Rockefeller University shows that anti-inflammatory drugs reduce the effectiveness of the most widely used class of antidepressant medications, the selective serotonin reuptake inhibitors (SSRIs), taken for depression and obsessive-compulsive disorder and anxiety disorders.This discovery, published online Monday in the Proceedings of the National Academy of Sciences, may explain why so many depressed patients taking SSRIs do not respond to antidepressant treatment and suggests that this lack of effectiveness may be preventable.The study may be especially significant in the case of Alzheimer's disease. Such patients commonly suffer from depression and unless this can be treated successfully, the course of the illness is likely to be more severe. Depression in the elderly is also a risk factor for developing Alzheimer's Disease and researchers have suggested that treating depression in the elderly might reduce the risk of developing the disease.In the recent study, investigators treated mice with antidepressants in the presence or absence of anti-inflammatory drugs. They then examined how the mice behaved in tasks that are sensitive to antidepressant treatment. They found that the mice's behavioral responses to antidepressants were inhibited by anti- inflammatory/analgesic treatments.They then confirmed these effects in a human population. Depressed individuals who reported anti-inflammatory drug use were much less likely to have their symptoms relieved by an antidepressant than depressed patients who reported no anti- inflammatory drug use. The effect was rather dramatic since, in the absence of any anti-inflammatory or analgesic use, 54 percent of patients responded to the antidepressant, whereas success rates dropped to approximately 40 percent for those who reported using anti-inflammatory agents."Many elderly individuals suffering from depression also have arthritic or related diseases and as a consequence are taking both antidepressant and anti-inflammatory medications. Our results suggest that physicians should carefully balance the advantages and disadvantages of continuing anti-inflammatory therapy in patients being treated with antidepressant medications," leader author Paul Greengard said.

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