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bpa in cans and plastic bottles linked to quick rise in blood pressure
This study has attracted new attention to chemical double phenol A, which is widely found in plastic bottles, plastic packaging and food and beverage cans lining.
Long-term exposure to BPA is known to be associated with heart disease, cancer and other health issues.
But for the first time, this new study suggests that a single exposure to this chemical has a direct and fairly direct effect on cardiovascular health.
The study found that when people drink canned soy milk, BPA levels in their urine rose sharply in two hours, and their blood pressure also rose sharply.
But when they never drink the same drink in a glass bottle lined with BPA, their BPA levels or blood pressure did not change significantly.
A single condition of elevated blood pressure may not be particularly harmful.
But the findings suggest that for people who drink alcohol from multiple cans or plastic bottles a day, repeated contact over time can lead to high blood pressure, Dr. Karin B.
Michele, a BPA expert who was not involved in the new study. Dr.
The design of the new study is impressive, and its findings are worrying, Mr. Michaels said.
About 30% of adults across the country suffer from high blood pressure and exposure to BPA is common.
I think this is a very interesting and important study that adds to the concern about biphenol a, said Dr.
Michelle is an associate professor at Harvard Medical School and the Women\'s Hospital in Brigham.
It raises many questions.
In this already rising country, we have such a high incidence of high blood pressure, and we have not really thought that the use of shuangphenol a and its use in cans is one of the causes of high blood pressure.
Bpa has been used to make countless daily products such as plastic bottles, food containers, contact lenses, and even tube cups and baby bottles since the 1960 generation.
This chemical can penetrate into food, and studies have shown that the vast majority of Americans tested contain BPA in their urine.
This chemical is an endocrine disruptor that can mimic estrogen.
In 2012, the Food and Drug Administration said that BPA could no longer be used in baby bottles and children\'s drinking cups.
The Canadian regulator officially declared BPA a toxic substance in 2010 and banned all children\'s products.
Not everyone believes that BPA poses risks to consumers.
The US chemical commission is an industrial trade organization that says bisphenol a is safe and opposes legislative proposals for a federal and state ban on bisphenol.
Much of the evidence against bischol a came from a large population study, rather than a control clinical trial.
Some believe that high levels of BPA in urine are associated with increased risk of hypertension, heart and peripheral arterial disease.
However, these studies only show correlation and do not provide evidence that BPA is the cause.
The latest study published in the Journal of the American Heart Association, high blood pressure, is a randomized controlled trial.
The author, a team from the Department of Preventive Medicine at Seoul National University in South Korea, recruited 60 elderly subjects, most of them women, and assigned them to three different occasions, weeks apart, drink soy milk from cans or glass bottles.
Although some people have a history of hypertension, most do not have a history of hypertension.
The researchers chose soy milk because it did not have any known properties that could increase blood pressure.
Unlike soda, juice and other acidic drinks, soy milk is considered to be fairly neutral, and these drinks are more likely to filter out BPA from the container.
The study found that their urine BPA levels were still quite low when subjects drank glass bottles.
But after drinking from the jar for two hours, their BPA levels were about 16 times that of the original.
With the rise of BPA levels, the average systolic blood pressure reading also increased by about 5mm of mercury.
Overall, the risk of cardiovascular disease is doubled for every 20mm increase in systolic blood pressure.
BPA is known to block certain estrogen receptors that are believed to be responsible for repairing blood vessels and controlling blood pressure.
The authors note that this chemical may also indirectly affect blood pressure by interfering with thyroid hormones.
Physicians say clinicians and patients, especially those with high blood pressure or cardiovascular disease, should be aware of potential clinical problems with elevated blood pressure when eating canned foods and beveragesYun-
Chul Hong is the author of the study and director of the Institute of Environmental Medicine, Seoul National University.
He advised people to choose fresh food and glass bottles instead of canned and plastic containers, and he urged manufacturers to develop and use healthy alternatives to replace BPA as the lining of canned containers.
Due to growing concerns among consumers, some bottles and packaged foods are now labeled with a statement of \"biphenol a free.
However, these products usually contain chemical alternatives similar to the double phenol S.
A study in the journal Environmental Health outlook found that plastic products advertised as BPA
Free with estrogen activity will still filter chemicals, some of which are even more effective than BPA. Dr.
Michaels of Harvard University published a prominent study on BPA exposure, saying she tried to avoid eating or drinking food from cans and plastic bottles and drinking carbonated water from glass bottles.
She said the label says \"biphenol a is free\", which does not help ease her concerns.
\"It doesn\'t have biphenol A, but on the other hand, I am concerned that there may also be problems with the new chemicals they put in it,\" she said . \".
Changing one chemical to another would not make me feel comfortable.
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