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Being overweight or obese ‘linked to 10 common cancers’ August 27, 2014

Filed under: Health,Nutrition — jax allen @ 6:30 am
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Being overweight or obese ‘linked to 10 common cancers’
By Smitha Mundasad
Health reporter, BBC News

Researchers suggest obesity’s effects on cancers vary depending on the type of tumour

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Being overweight and obese puts people at greater risk of developing 10 of the most common cancers, according to research in the Lancet medical journal.

Scientists calculated individuals carrying this extra weight could contribute to more than 12,000 cases of cancer in the UK population every year.

They warn if obesity levels continue to rise there may be an additional 3,700 cancers diagnosed annually.

The study of five million people is the largest to date to confirm the link.

This variation tells us BMI must affect cancer risk through a number of different processes, depending on cancer type”

Dr Krishnan Bhaskaran
Lead researcher

Large numbers
Doctors often warn being overweight can increase the risk of developing cancer, but this study highlights those forms of the disease where the risk is greatest.

Led by scientists from the London School of Hygiene and Tropical Medicine researchers gathered data on five million people living in the UK, monitoring changes to their health over a period of seven years.

They found each 13-16kg (2-2.5 stone) of extra weight an average adult gained was linked firmly and linearly to a greater risk of six cancers.

How big this risk was varied depending on tumour type.

Cancer of the uterus had the highest increased risk
gallbladder
kidney
cervix
thyroid
leukaemia had the lowest rise in risk.

People who had a high body mass index (calculated using weight and height) were also more likely to develop cancer of the liver, colon, ovaries, and post-menopausal breast cancer.

But the effects for these cancers were less clear-cut and were influenced by individual factors such as the menopause.

Researchers say though obesity was associated with the development of the most common cancers – which represent 90% of the cancers diagnosed in the UK, some showed no link at all.

And there is some evidence to suggest a higher BMI is associated with a lower chance of getting prostate cancer.

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Modest risks
Dr Krishnan Bhaskaran, who led the research, said: “There was a lot of variation in the effect of BMI on different cancers.

“For example, risk of cancer of the uterus increased substantially at higher body mass index, for other cancer we saw a more modest increase in risk or no effect at all.

“This variation tells us BMI must affect cancer risk through a number of different processes, depending on cancer type”

Tom Stansfeld, at Cancer Research UK, said: “Although the relationship between cancer and obesity is complex, it is clear carrying excess weight increases your risk of developing cancer.

“Keeping a healthy weight reduces cancer risk and the best way to do this is through eating a healthy, balanced diet and exercising regularly.”

Makes you think?

Time to decide to be active EVERYDAY
Time to plan your healthy food options
Time to RESTRICT sweet and fatty treats

Need help? Find an activity group near you or a healthy eating group online.

Eat Clean. Stay Active. Feel Great

Jax

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