Featured Research

from universities, journals, and other organizations

Excess sugar linked to cancer

Date:
February 1, 2013
Source:
madrimasd
Summary:
Sugars are needed to provide us with energy and in moderate amounts contribute to our well-being. Sustained high levels of sugars, as is found in diabetics, damages our cells and now is shown that can also increase our chance to get cancer: The dose makes the poison as Paracelsus said.

Sugars are needed to provide us with energy and in moderate amounts contribute to our well-being. Sustained high levels of sugars, as is found in diabetics, damages our cells and now is shown that can also increase our chance to get cancer: The dose makes the poison as Paracelsus said.

It is well known that obesity is a leading cause of diabetes, a disease where the body fails to control blood sugar levels. High blood sugar levels are characteristic in obesity and diabetes. What is less well known is that diabetes and obesity are also linked to an increase in cancer risk. That is, the diabetic population has up to double chances to suffer pancreatic or colon cancer among others, according to well sustained epidemiological studies. With obesity in British and Spanish children reaching 16%, the highest in Europe, this epidemic has major health implications. How obesity or diabetes increase cancer risk has been a major health issue.

Scientists led by Dr. Custodia Garcia-Jimenez at the University Rey Juan Carlos in Madrid have uncovered a key mechanism that links obesity and diabetes with cancer: high sugar levels, which increase activity of a gene widely implicated in cancer progression.

Dr Garcia Jimenez's laboratory was studying how cells in the intestine respond to sugars and signal to the pancreas to release insulin, the key hormone that controls blood sugar levels. Sugars in the intestine trigger cells to release a hormone called GIP that enhances insulin release by the pancreas.

In a study published in Molecular Cell, Dr Garcia Jimenez's team showed that the ability of the intestinal cells to secrete GIP is controlled by a protein called β-catenin, and that the activity of β-catenin is strictly dependent on sugar levels.

Increased activity of β-catenin is known to be a major factor in the development of many cancers and can make normal cells immortal, a key step in early stages of cancer progression. The study demonstrates that high (but not normal) sugar levels induce nuclear accumulation of β-catenin and leads to cell proliferation. The changes induced on β-catenin, the molecules involved and the diversity of cancer cells susceptible to these changes are identified.

Dr. Custodia Garcνa said "We were surprised to realize that changes in our metabolism caused by dietary sugar impact on our cancer risk. We are now investigating what other dietary components may influence our cancer risk. Changing diet is one of easiest prevention strategies that can potentially save a lot of suffering and money."

Colin Goding, Professor of Oncology at the University of Oxford, UK said 'Previously we were unsure about how increased blood sugar found in diabetes and obesity could increase cancer risk. This study identifies a key molecular mechanism through which high blood glucose would predispose to cancer. It opens the way for potential novel therapies aimed at reducing cancer risk in the obese and diabetic populations.'

Estimations published by the World Health Organisation (WHO): Obesity predisposes to diabetes and its prevalence is doubling every 20 years worldwide. More than 1 in 10 adults worldwide (12%) are obese (BMI>30). 1 in 6 children in UK and Spain suffer obesity.

Diabetes caused 4.6 million deaths in 2011, more than 2 deaths per hour in Spain, more in USA. Worldwide, 1 in 10 adults (10%) suffered from diabetes in 2010 and more than one-third of individuals with diabetes are unaware they suffer from the disease. The national cost of diabetes or cancer is in the order of billions of pounds or euros in Spain or England.

More than half (63%) of premature deaths worldwide are due to non communicable diseases (NCD) of which cancer and diabetes are among the 4 causes more frequent. At least 1 in 3 of the main cancers (27-39%) can be prevented by improving diet, physical activity and body composition.


Story Source:

The above story is based on materials provided by madrimasd. Note: Materials may be edited for content and length.


Cite This Page:

madrimasd. "Excess sugar linked to cancer." ScienceDaily. ScienceDaily, 1 February 2013. <www.sciencedaily.com/releases/2013/02/130201100149.htm>.
madrimasd. (2013, February 1). Excess sugar linked to cancer. ScienceDaily. Retrieved October 23, 2014 from www.sciencedaily.com/releases/2013/02/130201100149.htm
madrimasd. "Excess sugar linked to cancer." ScienceDaily. www.sciencedaily.com/releases/2013/02/130201100149.htm (accessed October 23, 2014).

Share This



More Health & Medicine News

Thursday, October 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Orthodontist Mom Jennifer Salzer on the Best Time for Braces

Orthodontist Mom Jennifer Salzer on the Best Time for Braces

Working Mother (Oct. 22, 2014) — Is your child ready? Video provided by Working Mother
Powered by NewsLook.com
U.S. Issues Ebola Travel Restrictions, Are Visa Bans Next?

U.S. Issues Ebola Travel Restrictions, Are Visa Bans Next?

Newsy (Oct. 22, 2014) — Now that the U.S. is restricting travel from West Africa, some are dropping questions about a travel ban and instead asking about visa bans. Video provided by Newsy
Powered by NewsLook.com
US to Track Everyone Coming from Ebola Nations

US to Track Everyone Coming from Ebola Nations

AP (Oct. 22, 2014) — Stepping up their vigilance against Ebola, federal authorities said Wednesday that everyone traveling into the US from Ebola-stricken nations will be monitored for symptoms for 21 days. (Oct. 22) Video provided by AP
Powered by NewsLook.com
Doctors Help Paralysed Man Walk Again, Patient in Disbelief

Doctors Help Paralysed Man Walk Again, Patient in Disbelief

AFP (Oct. 22, 2014) — Polish doctors describe how they helped a paralysed man walk again, with the patient in disbelief at the return of sensation to his legs. Duration: 1:04 Video provided by AFP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
 
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:  

Breaking News:

Strange & Offbeat Stories

 

Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:  

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile iPhone Android Web
Follow Facebook Twitter Google+
Subscribe RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins