Breastfeeding may help reduce risk of aggressive cancer: study

Breastfeeding for at least six months may avail reduce a woman's risk of infection of an aggressive form of bosom cancer, according to a study that explored how reproductive factors influence different types of breast cancer.

In the aggressive "triple negative" breast crab, tumours do not react to a key regulatory protein called HER2 or to the hormones oestrogen and progestin.

Because of that, hormone-based treatments are of little help for triplet negative boob cancers, which is more common among younger women. Previous studies have plant women with triple damaging cancer ar more likely to take a relapse.

The latest study looked for patterns among women with three types of breast cancer:

Estrogen-sensitive, as well called phenobarbitone � the majority of breast cancers that run to farm slowly. HER-2 positive � cancers that grow apace and run to have poor forecast, but canful often be treated successfully with Herceptin, according to the American Cancer Society. Triple negatives.

In the Oct. 1 issue of the journal Cancer, Amanda Phipps, of the Fred Hutchinson Cancer Research Center in Seattle and her colleagues launch triple-negative breast cancer was half as common among women world Health Organization said they breastfed for six months or more compared with women world Health Organization hadn't breastfed.

Estrogen-sensitive or phenobarbitone breast cancers were also 20 per cent less common among those wHO breast federal official, the researchers said.

"Our data do backup the premise that risk factor profiles vary by breast cancer subtype and that hormonal risk factors have a greater shock on luminal-type breast cancers than HER 2-overexpressing or triple-negative tumors," the researchers said.

Hormone exposure

Until recently, researchers have grouped breast cancer subtypes together when looking for risk factors, but that could lack those launch in only certain types.

To help fulfil this gap, Phipps's team looked at how reproductive factors such as breastfeeding and age of first menstruation and menopause influenced subtypes of breast cancer.

Starting to menstruate before eld 13 was linked to a higher risk of HER2 breast cancer, the researchers found.

Entering menopause late, after long time 55, and taking

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