3.2 Million Europeans Are Diagnosed With Cancer Every Year

Every year 3.2 million Europeans are diagnosed with cancer, mostly breast, colorectal or lung cancers, according to European Commission report. In 2006 in Europe, there were an estimated 3 191 600 cancer cases diagnosed (excluding nonmelanoma skin cancers) and 1 703 000 deaths from cancer. The most common form of cancers was breast cancer (429 900 cases, 13.5% of all cancer cases), followed by colorectal cancers (412 900, 12.9%) and lung cancer (386 300, 12.1%). Lung cancer, with an estimated 334 800 deaths (19.7% of total), was the most common cause of death from cancer, followed by colorectal (207 400 deaths), breast (131 900) and stomach (118 200) cancers, according to European Society for Medical Oncology. Breast cancer is the leading cause of death from cancer in women in Europe. A fall in breast cancer mortality rates in most European countries in the 1990s was reported by several studies. These declines have been attributed to the combined effect of earlier detection and improving treatment, but it was observed mainly in young women, and because of the ageing of the European population the number of deaths from breast cancer is still rising (130 000 in 2004, 132 000 in 2006).

Excess body weight causes over 124,000 new cancers a year

At least 124,000 new cancers in 2008 in Europe may have been caused by excess body weight, according to estimates from a new modelling study. The proportion of cases of new cancers attributable to a body mass index of 25kg/m² or more were highest among women and in central European countries such as the Czech Republic, Latvia, Slovenia and Bulgaria. “As more people stop smoking and fewer women take hormone replacement therapy, it is possible that obesity may become the biggest attributable cause of cancer in women within the next decade”, Dr Andrew Renehan, the lead author of the study, said.
Dr Renehan, who is a senior lecturer in cancer studies and surgery at the University of Manchester (UK), and his colleagues in the UK, The Netherlands and Switzerland, created a sophisticated model to estimate the proportion of cancers that could be attributed to excess body weight in 30 European countries. Using data from a number of sources including the World Health Organisation and the International Agency for Research on Cancer, they estimated that in 2002 (the most recent year for which there are reliable statistics on cancer incidence in Europe) there had been over 70,000 new cases of cancer attributable to excess BMI out of a total of nearly 2.2 million new diagnoses across the 30 European countries. Then, the researchers projected the figures forward to 2008, taking into account what was known about shifts in the distribution of BMI, the dramatic decline in women’s use of hormone replacement therapy (HRT) from 2002 onwards following research that showed it increased the risk of breast cancer, and the wider use of PSA screening for prostate cancer in men.

They found that the number of cancers that could be attributed to excess body weight increased to 124,050 in 2008. In men, 3.2% of new cancers could be attributed to being overweight or obese and in women it was 8.6%. The largest number of obesity-related new cancers was for endometrial cancer (33,421), post-menopausal breast cancer (27,770) and colorectal cancer (23,730). These three accounted for 65% of all cancers attributable to excess BMI.

The number of new cases of obesity-related oesophageal cancer was particularly high in the UK relative to the rest of Europe. “This country accounts for 54% of new cases across all 30 countries,” said Dr Renehan. “This may be due to synergistic interactions between smoking, alcohol, excess body weight and acid reflux – and is currently an area where research is required.”