Natural Health News — A new study has revealed that a beverage made from broccoli sprouts can help clear known carcinogens from the body.
The clinical trial, involving nearly 300 Chinese men and women residing in one of China’s most polluted regions, found that daily consumption of a half cup of broccoli sprout juice produced rapid, significant and sustained higher levels of excretion of benzene, a known human carcinogen, and acrolein, a lung irritant.
Researchers from the Johns Hopkins Bloomberg School of Public Health, working with colleagues at several US and Chinese institutions, used the broccoli sprout beverage to provide sulforaphane, a plant compound already demonstrated to have cancer preventive properties in animal studies.
The study was published in the online edition of the journal Cancer Prevention Research.
A complex problem
“Air pollution is a complex and pervasive public health problem,” notes John Groopman, PhD, Anna M. Baetjer Professor of Environmental Health at the Johns Hopkins Bloomberg School of Public Health and one of the study’s co-authors.
“To address this problem comprehensively, in addition to the engineering solutions to reduce regional pollution emissions, we need to translate our basic science into strategies to protect individuals from these exposures. This study supports the development of food-based strategies as part of this overall prevention effort.”
Air pollution, an increasing global problem, causes as many as seven million deaths a year worldwide, according to the World Health Organization, and has in recent years reached perilous levels in many parts of China.
Last year, the International Agency for Research on Cancer classified air pollution and particulate matter (PM) from air pollution as carcinogenic to humans.
Supporting the body
Diets rich in cruciferous vegetables, of which broccoli is one, have been found to reduce risk of chronic degenerative diseases, including cancer. Broccoli sprouts are a source of glucoraphanin, a compound that generates sulforaphane when the plant is chewed or the beverage swallowed. It acts to increase enzymes that enhance the body’s capacity to expunge these types of the pollutants.
The 12-week trial included 291 men and women (with an average of of 53) who live in a rural farming community in Jiangsu Province, China, approximately 50 miles north of Shanghai, one of China’s more heavily industrialized regions.
Participants in the control group drank a beverage made of sterilised water, pineapple and lime juice while the beverage for the treatment group additionally contained a dissolved freeze-dried powder made from broccoli sprouts rich in glucoraphanin and sulforaphane. Urine and blood samples were taken over the course of the trial to measure the fate of the inhaled air pollutants.
The research team found that among participants receiving the broccoli sprout beverage, the rate of excretion of the carcinogen benzene increased 61% beginning the first day and continuing throughout the 12-week period.
In addition, the rate of excretion of the irritant acrolein, rapidly and durably increased 23% during the 12-week trial.
Secondary analyses by the investigators indicated that the sulforaphane may be exerting its protective actions at a molecular level, elevating the capacity of cells to adapt to and survive a broad range of environmental toxins.
Safe and effective
“This study points to a frugal, simple and safe means that can be taken by individuals to possibly reduce some of the long-term health risks associated with air pollution,” notes Thomas Kensler, PhD, professor at the Johns Hopkins Bloomberg School and one of the study’s co-authors. “This while government leaders and policy makers define and implement more effective regulatory policies to improve air quality.”
The clinical trial targeting prevention is notable in that it evaluated a possible means to reduce the body burden of toxins following unavoidable exposures to pollutants. The majority of clinical trials involve treatments of diseases that have already presented or advanced into later stages. Further clinical trials, to evaluate optimal dosage and frequency of the broccoli sprout beverage, are planned in the same general region of China.
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