South Asian women have higher breast cancer risk than White women.
Study leader, Dr. Matthew Day and team are not sure why breast cancer incidence has increased so rapidly among British South Asian females. They suggest that possibly some lifestyle factors, like having fewer children today, getting pregnant later in life, an increase in screening uptake, oral contraceptive usage, alcohol consumption, and possibly smoking may have had an impact.
Dr. Day and team said, however, that after carrying out their study in Leicester, the evidence is compelling that breast cancer risk for South Asian women in Britain has increased considerably over the last decade.
The researchers had gathered and examined data on 135,000 adult females from a range of ethnic backgrounds from 2000 to 2009. They found that:
During the period 2000-2004, South Asian women's risk of developing breast cancer was 45% lower than it was for white women
By the end of the 2005-2009 period, South Asian women were 8% more likely to develop breast cancer compared to white women
The greatest increase in breast cancer risk was seen among South Asian women aged 65+ years, who by the end of 2009 were found to be 37% more likely to develop breast cancer compared to white women in the same age group.
The study did not examine diabetes prevalence among older South Asian women during the nine-year period to determine whether this might have explained the dramatic increase in breast cancer rates. Post-menopausal women with type 2 diabetes have a 27% higher risk of breast cancer.
The impact of socioeconomic deprivation - during the 2000-2004 period, socioeconomic deprivation was not seen as a risk factor for breast cancer risk, but it was by 2009. This surprised the researchers, because the trend in the rest of the female population was the other way round.
From 2000 to 2009, breast cancer rates for white women remained fairly constant.
Clinical Lead at Public Health England's National Cancer Intelligence Network, Dr Mick Peake, said "The results of the Leicester study should assist public health services to both plan for, and respond to, the changing risk profile of breast cancer in the population, particularly with regards Asian women who for a long time have been another group whose attendance rate for screening has been low. At the individual level, if women are concerned about breast cancer, they should speak to their GP."
Low Asian breast cancer risk? Is it a myth?
Several studies over the last ten years have challenged the belief that breast cancer incidence in Asia is very low and that female Asian immigrants or female descendants of Asian immigrants have lower breast cancer risks. Others have shown that Asian immigrants' breast cancer risk rises after they have settled in their adopted country.
Asia is an enormous continent. Breast cancer rates vary enormously from Japan to China, Indonesia, the Philippines, India, Pakistan, Bangladesh, etc.
A team of scientists from the Cancer Prevention Institute of California (CPIC) released their findings from a study that challenged the notion that breast cancer rates are uniformly low across the population of Asian women.
Researchers at West Virginia University reported in the journal Cancer (September 2008 issue) that immigrants from Pakistan and India have higher risks of breast and prostate cancer after entering the USA. Study leader, Jame Abraham, M.D., said "Breast cancer and prostate cancer develop due to many reasons, but environmental factors and lifestyle play a major role in these cancers. When men and women from India and Pakistan migrate to the United States, their disease profiles change, mirroring the American risk."
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|Publication:||Balochistan Times (Baluchistan Province, Pakistan)|
|Date:||Jun 17, 2013|
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