Hard Times for Soft Drinks

By Michael Blanding, AlterNet. Posted March 13, 2006.

It could be nearing high noon for the soda industry. After years of repeated battering over the issues of childhood obesity and tooth decay, sugary beverages have suffered an unprecedented backlash. The New York Times reported last week that soft drink sales are down for the first time in 20 years, and sales of bottled water, juices and energy drinks are continuing to eat into the soda market.

Into this anti-carbonated climate comes a potentially bigger bombshell that could spell disaster for the industry. Last month, the FDA quietly revealed that some soft drinks were found to contain the human carcinogen benzene in levels up to 10-20 parts per billion (ppb) -- four times the acceptable limit found in drinking water. Benzene, a chemical linked to leukemia and other forms of cancer, forms in certain beverages under certain conditions, such as exposure to heat and light.

The agency immediately downplayed the risk, saying that such small amounts did not pose a significant danger to health. "Levels like that with benzene, our only concern would be lifetime consumption," says George Pauli, associate director of science and policy in the office of food additive safety.

While scientists and doctors disagree on how hazardous benzene is to human health, the Environmental Protection Agency requires public notification and alternative water supply for drinking water contaminated with levels of 5 ppb. Even "relatively short periods" of exposure at that level can "potentially cause … temporary nervous system disorders, immune system depression [and] anemia," according to the agency. A lifetime of exposure, says the EPA, can cause "chromosome aberrations [and] cancer."

The FDA has not set an acceptable level of benzene for beverages, arguing that the public consumes soft drinks and other beverages in far lower amounts than they do drinking water -- a contention that any parent of a teenager might find laughable. Younger children may have already had a lifetime of benzene consumption.

Almost as alarming as the existence of benzene in soft drinks is that the FDA knew about the problem for more than 15 years, yet never revealed it to the public or took adequate measures to fix it. Even the latest round of tests would not have been conducted if it weren't for documents posted on the internet late last year by an industry whistleblower named Larry Alibrandi. Those papers concern an undisclosed study at Cadbury-Schweppes in 1990 called Project Denver, which found that certain soft drinks, particularly diet orange-flavored sodas, had the tendency to form benzene when exposed to heat and light.

While the industry contends the problem was corrected in the most popular sodas, no public recall was done at the time. Judging from their ingredients, dozens of products now on the shelves could potentially have the same problem, including such popular brands as Sunny Delight, flavored Diet Pepsi and Fanta Orange. (The Environmental Working Group has posted a partial list of possibly risky products.)

"The question is, how much does this problem still exist today?" says Alibrandi, who is now head of American Quality Beverages, a small New York producer of health drinks. "We have hundreds of examples from the trade, and many of them could potentially be a problem. What's especially disconcerting is the products engineered for children, where it's a potentially bigger problem for them since their body mass is very small."

No recall

In November 1990, Alibrandi was working in product development at the Connecticut labs of the British company Cadbury-Schweppes, when he says he was called into his supervisor's office one morning. "He closed the door and had a very, very concerned look on his face," recounts Alibrandi. "He said that a carcinogen was found in beverages, and they were concerned because they didn't know what the source was." That same day, Alibrandi booked a flight to Florida to test samples in a special lab capable of exposing them to extremes of heat and light.

After several trials, Cadbury-Schweppes' chemists determined that the benzene was caused by a chemical reaction between the preservative sodium benzoate and ascorbic acid (Vitamin C). The effect was found to be especially prevalent in diet sodas, and shot up to even higher levels after products were subjected to extremes of heat and light. According to the documents, Cadbury-Schweppes' Diet Crush was found to contain benzene at 25 parts per billion (ppb) -- five times the acceptable EPA limit. After exposure to 16 hours of ultraviolet light at temperatures around 30 C (86 F), that level jumped to a whopping 82 ppb. Diet Slice (made by Pepsi) contained 1 ppb before exposure, and 41.5 ppb after exposure. Diet Minute Maid (made by Coca-Cola) contained less than 0.5 ppb before exposure and 4.5 ppb afterwards, the documents say.

Michael Blanding is a freelance writer living in Boston. Read more of his writing at MichaelBlanding.com.

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