The earth without humans

Benzene Levels in Soft Drinks Above Limit – Yahoo! News

WASHINGTON – Cancer-causing benzene has been found in soft drinks at levels above the limit considered safe for drinking water, the Food and Drug Administration acknowledged Wednesday.
Even so, the FDA still believes there are no safety concerns about benzene in soft drinks, or sodas, said Laura Tarantino, the agency’s director of food additive safety.”We haven’t changed our view that right now, there is not a safety concern, not a public health concern,” she said. “But what we need to do is understand how benzene forms and to ensure the industry is doing everything to avoid those circumstances.”

The admission contradicted statements last week, when officials said FDA found insignificant levels of benzene.

In fact, a different study found benzene at four times the tap water limit, on average, in 19 of 24 samples of diet soda.

The formation of benzene in soft drinks is from the reaction of ascorbic acid (aka Vitamin C) and benzoate salts, notably sodium benzoate which is used as a preservative. As the FDA letter states:

We learned that elevated temperature and light can stimulate benzene formation in the presence of benzoate salts and vitamin C, while sugar and EDTA salts inhibit benzene formation.

Is this a pressing concern? First of all, exposure modeling done by the EPA indicates that 93% of all benzene exposure is through inhalation (cigarette smoke, indoor offgassing, that wonderful refueling smell!), with 7% exposure through oral ingestion. So, potentially elevated levels in this 7% fraction are not likely to greatly increase exposure. In addition, the 5 parts per billion level for drinking water is set based on an assumed daily consumption of 2 liters per day (Source – USEPA), a safety factor up from the actual estimated 0.9-1.2 L per day measured consumption. Assuming the average amount of benzene in soda (mainly diet, mind you) is 4 times that of drinking water, a 500 ml dose of diet soda per day is required to equal the dose from drinking water, which mind you, only counts for 7% of the total bezene exposure. So in a sense, a person drinking 2 servings of diet soda per day would exceed the exposure from drinking water at the federally regulated level, and knock the socks off the California standard of 0.13 ppb in water. This will increase his/her known oral exposure. The total exposure to benzene of that individual, however, would not go up significantly because the overwhelming majority of the exposure still occurs through the nose, not through the mouth.

The issue here, and benzene is just the symptom, is that consumers know much more about their drinking water than they do about their manufactured food products, and that is not good for the consumer or for the industry because in the absence of knowledge and full disclosure, both parties are vulnerable. Which is why attempts to limit consumer knowledge hurt everyone.

Conclusion Please don’t stop drinking soda because of this, I am sure you can find plenty of other reasons to limit your soda consumption… Drink lots of filtered tap water, it’s the best!! And, I can assure you that most tap water is tested thoroughly, it’s zero calories and cheap!

Not always a fan of Monbiot, but this OP-ED piece on the government bailout of a British bank run by a libertarian intellectual contains in it, a passage that deserves to be framed.

Wherever modern humans, living outside the narrow social mores of the clan, are allowed to pursue their genetic interests without constraint, they will hurt other people. They will grab other people’s resources, they will dump their waste in other people’s habitats, they will cheat, lie, steal and kill. And if they have power and weapons, no one will be able to stop them except those with more power and better weapons. Our genetic inheritance makes us smart enough to see that when the old society breaks down, we should appease those who are more powerful than ourselves and exploit those who are less powerful. The survival strategies that once ensured cooperation among equals now ensure subservience to those who have broken the social contract.

Now, that is a cogent argument for regulation if I ever saw one.

(Via Nanopolitan.)

I have written about bisphenol A recently. It’s a chemical found in polycarbonate plastics that has been linked with some crazy effects in mice at ambient levels including disruption of oogenesis (egg production) and effects two generations removed (grandmother effects).

Public health agency linked to chemical industry – Los Angeles Times

For nearly a decade, a federal agency has been responsible for assessing the dangers that chemicals pose to reproductive health. But much of the agency’s work has been conducted by a private consulting company that has close ties to the chemical industry, including manufacturers of a compound in plastics that has been linked to reproductive damage.

In 1998, the Center for the Evaluation of Risks to Human Reproduction was established within the National Institutes of Health to assess the dangers of chemicals and help determine which ones should be regulated. Sciences International, an Alexandria, Va., consulting firm that has been funded by more than 50 industrial companies, has played a key role in the center’s activities, reviewing the risks of chemicals, preparing reports, and helping select members of its scientific review panel and setting their agendas, according to government and company documents.

This kind of work is too important to be left to contractors like Sciences International (however good they may be), which also has contracts with companies that manufacture and market products containing Bisphenol A. It’s very simple, most companies, for profit entities and even non-profits dependent on funding sources tend to maximize short term gain over long term good. While the political arm of the government does that as well, the institutions stable enough to do reliable work on policy issues that affect our long term well being are few in number. Government run research with stable funding, good employees and good management will do this work well, it’s a good match between the nature of the work and the nature of the organizations.

The ever excellent Pump Handle has more, I read their post as I was writing this one and so, nothing more to say, really, except, remember Children of Men! Fertility is not to be toyed with, any chemical that has the ability to affect egg production two generations down needs to be handled with care.