Rice grown in Louisiana, Arkansas and Texas had the highest levels of inorganic arsenic, a carcinogen that could pose a risk to adults and children if too much is consumed, according to Consumer Reports.

Consumer Reports tested 128 samples of basmati, jasmine and sushi rice for arsenic. Those results were combined with findings from the group’s 2012 tests and data from the Food and Drug Administration’s analysis of arsenic in rice.

Consumer Reports’ found:

• White rices from California have 38 percent less inorganic arsenic than white rice from other parts of the country.

• White basmati rice from California, India and Pakistan, and all U.S.-produced sushi rice, has about half the inorganic arsenic of most other types of rice.

• Brown rices tend to have more arsenic than white rices of the same type.

The USA Rice Federation has said the health benefits of including white or brown rice in a person’s diet outweigh the potential risks associated with trace levels of arsenic. But Consumer Reports says those levels carry a risk.

Consumer Reports has issued new consumption guidelines based on this research.

According to Consumer Reports, regular exposure to small amounts of arsenic can increase a person’s risk of developing bladder, lung, and skin cancer, heart disease and type 2 diabetes.