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White bread increases cancer risk
Last updated at 10:12am on 20th October 2006
Experts say eating white bread can increase the risk of cancer
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Eating lots of white bread raises the risk of a cancer that kills thousands of Britons every year, according to new research.
Those who eat five slices a day are almost twice as likely to develop the most common form of kidney cancer compared to those who have one and a half slices.
Scientists put the cause down to refined cereals triggering a surge in blood sugar and insulin levels, which is thought to fuel cancer cell growth.
People should particularly cut down on white bread, which causes the biggest rise in blood glucose levels, and opt for wholemeal varieties instead.
The study also adds to the mounting evidence of the health benefits of following a low GI diet.
This involves avoiding processed and refined foods, such as white bread which have a high Glycaemic Index.
Whole grain foods are classed as having a low GI value as they lead to slower release of sugar into the blood stream.
The new study published in the International Journal of Cancer set out to investigate potential triggers of Renal Cell Carcinoma.
It accounts for more than 80 per cent of the 6,000 cases of kidney cancer diagnosed each year in the UK and claims 3,400 lives annually.
The researchers from the Institute of Pharmacological Research in Milan, Italy studied more than 2300 Italians - 767 who had the disease and 1534 who did not - and asked them detailed information about their diet in the previous two years.
The scientists discovered a clear link between eating lots of bread and the risk of getting the cancer.
The study did not specify what type of bread people ate.
However, overall those in the group that ate the most bread - equivalent to 35 slices weekly or five a day - were almost twice as likely to develop the cancer as those who had just 11 slices a week- around one and a half a day.
In contrast, those who ate a high proportion of poultry, meat and vegetables had a lower risk of getting the kidney cancer.
The study did not establish exactly what in bread may be to blame, however the researchers believe it may be linked to the high Glycaemic Index of many types.
Foods with a high GI cause a dramatic rise in blood sugar levels which leads to the release of insulin and in turn chemicals that can fuel cell growth.
The theory is that cancer cells use these chemicals and the glucose to fuel their own unchecked, and therefore dangerous, growth.
Lead researcher Dr Francesca Bravi said her study suggests that a diet with fewer cereals and more vegetables may help reduce the risk of renal cell carcinoma.
"On the basis of the study we can also suggest reducing the consumption of refined cereals and increase that of whole grain ones," she added.
Past studies have also found women who follow a low GI diet after the menopause have a lower risk of breast cancer than those who have lots of high GI foods.
The diet is also advised for people with diabetes to help prevent peaks and troughs in blood sugar levels.
http://www.dailymail.co.uk/pages/li...ain.html?in_article_id=411506&in_page_id=1774
Last updated at 10:12am on 20th October 2006
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Eating lots of white bread raises the risk of a cancer that kills thousands of Britons every year, according to new research.
Those who eat five slices a day are almost twice as likely to develop the most common form of kidney cancer compared to those who have one and a half slices.
Scientists put the cause down to refined cereals triggering a surge in blood sugar and insulin levels, which is thought to fuel cancer cell growth.
People should particularly cut down on white bread, which causes the biggest rise in blood glucose levels, and opt for wholemeal varieties instead.
The study also adds to the mounting evidence of the health benefits of following a low GI diet.
This involves avoiding processed and refined foods, such as white bread which have a high Glycaemic Index.
Whole grain foods are classed as having a low GI value as they lead to slower release of sugar into the blood stream.
The new study published in the International Journal of Cancer set out to investigate potential triggers of Renal Cell Carcinoma.
It accounts for more than 80 per cent of the 6,000 cases of kidney cancer diagnosed each year in the UK and claims 3,400 lives annually.
The researchers from the Institute of Pharmacological Research in Milan, Italy studied more than 2300 Italians - 767 who had the disease and 1534 who did not - and asked them detailed information about their diet in the previous two years.
The scientists discovered a clear link between eating lots of bread and the risk of getting the cancer.
The study did not specify what type of bread people ate.
However, overall those in the group that ate the most bread - equivalent to 35 slices weekly or five a day - were almost twice as likely to develop the cancer as those who had just 11 slices a week- around one and a half a day.
In contrast, those who ate a high proportion of poultry, meat and vegetables had a lower risk of getting the kidney cancer.
The study did not establish exactly what in bread may be to blame, however the researchers believe it may be linked to the high Glycaemic Index of many types.
Foods with a high GI cause a dramatic rise in blood sugar levels which leads to the release of insulin and in turn chemicals that can fuel cell growth.
The theory is that cancer cells use these chemicals and the glucose to fuel their own unchecked, and therefore dangerous, growth.
Lead researcher Dr Francesca Bravi said her study suggests that a diet with fewer cereals and more vegetables may help reduce the risk of renal cell carcinoma.
"On the basis of the study we can also suggest reducing the consumption of refined cereals and increase that of whole grain ones," she added.
Past studies have also found women who follow a low GI diet after the menopause have a lower risk of breast cancer than those who have lots of high GI foods.
The diet is also advised for people with diabetes to help prevent peaks and troughs in blood sugar levels.
http://www.dailymail.co.uk/pages/li...ain.html?in_article_id=411506&in_page_id=1774