Obesity In Younger Women Can Lower Risk Of Breast Cancer

Obesity In Younger Women Can Lower Risk Of Breast Cancer

Obesity In Younger Women Can Lower Risk Of Breast Cancer

New Delhi: Obesity is linked to increased risk of breast cancer in elderly people. But a recent study has proved the opposite to be true for the younger women. The women who have not hit menopause yet, have lower chance of breast cancer if they have higher body fat.    

In the study published in the journal JAMA Oncology, the increase of each five-unit body mass index (BMI) showed a 23% lower breast cancer risk between the age group of 18 and 24.

For the age group between 25 and 34, each five-unit increase in BMI was linked to 15 per cent lower risk.

There was a 13 per cent lower risk for BMI at ages 35 to 44, and a 12 per cent lower risk for BMI at ages 45 to 54 years.

Assistant professor at the University of North Carolina., Hazel B. Nichols said," We saw a trend where, as BMI went up, cancer risk went down. There was no threshold at which having a higher BMI was linked to lower cancer risk."

The reasons for these results could be attributed to multiple factors such as differences in hormones, including estrogen -- primary female sex hormone -- growth factors, or breast density, Nichols said.

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The key driver of breast cancer is said to be Estrogen, but the small amount estrogen produced by fat tissues before menopause may help tell the ovaries that they can produce less estrogen and also regulate other hormones or growth factors, Nichols said, adding that after menopause, women with higher adipose tissue have higher estrogen levels and usually a higher breast cance risk.

Nichols said," In young women, estrogen is one factor that contributes, but it's not the whole story."

The data was pooled from 19 diffierent studies to analyse the risk of breast cancer risk for a group of 758,592 women who were younger than 55 years.

Nicholas however suggested this study is not a reason to gain weight to prevent breast cancer. Though the heavier women have lower chance of breast cancer, but staying healthy have so many more benefits that should be considered.

(Inputs From News Agency IANS)

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