London: Obese women treated for breast cancer are 30 percent more likely to suffer a relapse than slimmer ones, a new study has claimed. Researchers from New York found that extra body fat may cause hormonal changes and inflammation that may drive some cases to spread and recur, despite treatment, the Daily Mail reported. The study found that there was a stepwise relationship between increasing body mass index and poor outcomes only in women with hormone receptor-positive breast cancer, the most common type of breast cancer. Previously, it has been suggested that a greater risk of the disease returning in heavier women might be due to under-treatment with chemotherapy drugs. It was feared they may have been receiving doses aimed at slimmer sufferers because their body size had not been taken into account. The latest study of almost 7,000 female patients was led by Dr Joseph Sparano, of the Albert Einstein College of Medicine`s Montefiore Medical Center, in New York. "We found that obesity at diagnosis is associated with about a 30 per cent higher risk of recurrence and a nearly 50 per cent higher risk of death, despite optimal treatment," he said.
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