They found that a 5 kilogram increase in total body fat mass was associated with a 35% increased risk for this type of breast cancer. A 5 kilogram increase in the body's fat mass was accompanied by a 56% increase in risk.
Base fat, according to the study, is defined by "fat contained in the trunk except trunk and limbs."
"The main benefit is that excess body fat is associated with increased breast cancer risk even with normal body mass index," said Dannenberg.
A person's BMI is calculated using a formula that indicates their size and weight. A "normal" BMI is between 18.5 and 24.9 according to the study.
The researchers also examined the blood data that were recorded at the beginning of the Women's Health Initiative, on other factors known to play a role in this area. B. increase in insulin molecules.
The authors of the editorial also point out that other researchers have investigated the topic with varying results, and point out that "these observations indicate that components of metabolic health and not the presence of a complete metabolic syndrome contribute to breast cancer risk can".
"I think it's a good step forward, leading us from BMI as an indicator of obesity to a close look at fat levels in the body," said Anton-Culver, who was not involved in the research.
Scientists have known that there is an association between obesity and cancer, but Anton-Culver says the new study leads the research beyond this common link.
"They correctly say in the abstract that obesity is associated with breast cancer, but more specifically, obesity around the abdomen is more specific for this compound," she said.
Although Anton Culver considers the research strong, she pointed out that only one particular cancer was studied.
"I do not know if we are seeing the same problems with other cancers as a result, what will it be, is it specific to breast cancer?" She said. "We have to ask this question next, because obesity is a risk factor for other cancers."