This year alone, 215,000 women will be diagnosed with breast cancer. And sadly, not all of them will be treated equally.

Researchers reported last Tuesday that breast cancer patients who are either obese or poor are more likely to receive lower doses of chemotherapy. This might be why some women relapse and others do not, according to the researchers whose findings appear in the Journal of Clinical Oncology.

This treatment discrepancy seems to stem from doctors who mean well and want to save certain women from severe side effects of chemotherapy. Doctors may be under-dosing obese patients, for example, because a larger dose based on weight could lead to worse side effects. There is no evidence this is true, however.

As for socioeconomic status, researchers report doctors are assuming less-educated patients won't stick with a tough course of treatment -- and so they prescribe less, in hopes patients will complete the regimen.

Researchers found that severely obese women were four times more likely to get less chemotherapy than they need. Women with less than a high school education were three times more likely to receive low doses of chemotherapy. And women living in the South were almost six times more likely to come up short on the drugs they need to save their lives.

"We have new therapies and cures out there for many forms of cancer and sadly, sometimes we're not curing people because they are not getting the full doses that should be standard," says Dr. Gary Lyman who led the study at the University of Rochester Medical Center in New York.