There has been growing concerns about the level of arsenic in rice and now, the U.S. Food and Drug Administration today released preliminary data on arsenic levels in certain rice and rice products.

The data are part of a larger FDA data collection and analysis about arsenic levels in rice and is based on the first set of approximately 200 samples of rice and rice products collected in the U.S. marketplace.

The FDA is in the process of collecting and analyzing a total of approximately 1,200 samples to examine the issue thoroughly. This data collection will be completed by the end of 2012.

Based on the currently available data and scientific literature the FDA does not have an adequate scientific basis to recommend changes by consumers regarding their consumption of rice and rice products.

FDA Commissioner Margaret A. Hamburg said the government agency understands that consumers are concerned about this matter and that is why they have prioritized analyzing arsenic levels in rice.

"The FDA is committed to ensuring that we understand the extent to which substances such as arsenic are present in our foods, what risks they may pose, whether these risks can be minimized, and to sharing what we know," Hamburg said. "Our advice right now is that consumers should continue to eat a balanced diet that includes a wide variety of grains - not only for good nutrition but also to minimize any potential consequences from consuming any one particular food."

Arsenic is a chemical element present in the environment from both natural and human sources, including erosion of arsenic-containing rocks, volcanic eruptions, contamination from mining and smelting ores, and previous or current use of arsenic-containing pesticides.

There are two types of arsenic compounds found in water, food, air, and soil: organic and inorganic. Together, the two types are referred to as total arsenic.

The new data show how much inorganic arsenic the FDA found in its initial samples, which include various brands of rice (non-Basmati), Basmati rice, brown rice, rice cereals (puffed, non-puffed, hot cereal, and infant cereals), rice cakes, and rice milk.

The FDA's analysis of these initial samples found average levels of inorganic arsenic for the various rice and rice products of 3.5 to 6.7 micrograms of inorganic arsenic per serving. Serving sizes varied depending on the rice product (for example, one serving of non-Basmati rice was equal to one cup cooked). A summary of the initial 200 sample findings can be found at www.fda.gov.

While the FDA data is consistent with results that Consumer Reports published today, the initial data collection is a first step in the agency's ongoing more thorough data analysis. There are many different types of rice and rice products that are grown in different areas and under different conditions. Further analysis is needed to assess how these variations may affect the results.

"It is critical to not get ahead of the science," said FDA Deputy Commissioner for Foods Michael Taylor. "The FDA's ongoing data collection and other assessments will give us a solid scientific basis for determining what action levels and/or other steps are needed to reduce exposure to arsenic in rice and rice products."