ATLANTA (CBS Atlanta/AP) – A new study suggests that obese persons who have been diagnosed with cancer may have additional cause for concern.

Researchers and experts on a panel with the American Society of Clinical Oncology, led by Dr. Gary Lyman of Duke University, have asserted that larger cancer patients are getting less chemotherapy administered than they should, since present standards to not allow for adjustments according to size.

“There’s little doubt that some degree of undertreatment is contributing to the higher mortality and recurrence rates in obese patients,” Lyman noted, according to The Associated Press.

The AP additionally learned that approximately 40 percent of cancer patients that are obese are receiving less than 85 percent of the dosage they should be getting according to their size.

The panel is now said to be urging for weight-based dosage sizes when treating patients suffering from all forms of cancer, including breast and colon, and the Food and Drug Administration is on board.

“By minimizing the dose, or capping the dose, we have been undertreating patients,” FDA cancer drug chief Dr. Richard Pazdur told the AP.

Experts additionally recommended adjustments in dosage sizes for the treatment of blood disorders such as leukemia.

In all, an estimated third of the American adult public is obese, the CDC has learned, many of whom may be more prone to developing certain types of cancer due to their weight.

(TM and © Copyright 2013 CBS Radio Inc. and its relevant subsidiaries. CBS RADIO and EYE Logo TM and Copyright 2013 CBS Broadcasting Inc. Used under license. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed. The Associated Press contributed to this report.)

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