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Would BPA Lead To Hypertension? BPA (bisphenol A) has been warned to be harmful by environmental groups for years. The FDA (Food and Drug Administration) has been urged to ban BPA that could be leached out of the plastic that it is used to make. In 2008, the Natural Resources Defense Council asked the FDA to prohibit the use of BPA in human food packaging but in vain. Though the FDA has barred the use of the chemical in baby bottles and children's sippy cups, but BPA has not been completely banned. A recent study conducted by researchers from Seoul National University College of Medicine in South Korea found that people who drank out of cans lined with resins BPA might have a brief increase in their blood pressure. Their findings were published December 8, 2014 in the American Heart Association journal ‘Hypertension’. 60 people, who were over the age of 60 from a local community center, mostly elderly women, were studied. They drank soymilk out of either a can or a bottle. The amount of BPA presence in their urine, and their heart rate and blood pressure were measured. Each volunteer was asked to drink out of a glass bottle, which contained no BPA, a can lined with a compound containing BPA or one of each. Same brand of soymilk was used in the study and the drinks were stored at the same temperature whether in bottles or cans. Soymilk was used because it has no known ingredient that will elevate blood pressure. After consuming canned beverages, the urinary BPA concentration was more than 1600 percent higher as compared to that after consuming glass bottled beverages. Meanwhile, the systolic blood pressure adjusted for daily variance increased by 4.5 mmHg after consuming 2 canned beverages compared to that after consuming 2 glass-bottled beverages. The difference was statistically significant. Systolic blood pressure is the top reading that should stay 120 or below. Heart rate was, however, not affected by BPA.
It is unclear whether the hike in blood pressure would have any health effects on healthy persons, and the study did not indicate how long that elevation might last. While a 4.5 mmHg difference sounds small, it could pose a threat to people who already have high blood pressure. An increase of 20 mmHg in systolic blood pressure would double the risk of cardiovascular disease, according to researchers. Research has found link between BPA and behavioral problems, breast and prostate cancer, heart disease, kidney disease, obesity, and Type-2 diabetes. In 2012, a paper published in the ‘Journal of the American Medical Association’ revealed that kids with the highest levels of BPA in their urine were twice as likely to be obese as those with low levels of the chemical. Health experts are also very concerned with children’s exposure to BPA since it could affect physical and mental development. The food industry uses BPA because it can help keep food fresh and help harden plastic. It can help a lining do a better job of sealing out bacteria. Although the FDA has not completely banned the chemical, the food industry is gradually removing from cans because of consumer demand. FDA’s latest update revealed that in the fall of 2014, the FDA experts from across the agency, specializing in toxicology, analytical chemistry, endocrinology, epidemiology, and other fields, completed a 4-year review of more than 300 scientific studies. Its review has not found any information in the evaluated studies to support the ban of BPA in food packaging. Pharmacokinetic and biomonitoring data continue to suggest that BPA is quickly and efficiently metabolized once ingested. In other words, human body excretes the compound. Perhaps, consumers who still have concerns about the harm that BPA would bring should try to eat fresh foods or glass-contained foods rather than canned foods before manufacturers could develop and use healthy alternatives to BPA for the inner lining of can containers.
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