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Lifestyle Health & Families Being overweight ‘linked to 18 cancers’ in under-40s Adults are encouraged to keep their weight at normal levels to help ward off various different cancers
Obesity has been linked to more cancers than previously thought in a new study (PA) (PA Wire) Your support helps us to tell the story From reproductive rights to climate change to Big Tech, The Independent is on the ground when the story is developing. Whether it's investigating the financials of Elon Musk's pro-Trump PAC or producing our latest documentary, 'The A Word', which shines a light on the American women fighting for reproductive rights, we know how important it is to parse out the facts from the messaging.
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Your support makes all the difference. Read more Being overweight as a young adult can increase the risk of developing 18 cancers – more than have been previously linked with the disease, researchers found.
Previous studies have shown that people who are overweight or obese have a heightened risk of a number of different cancers including breast, bowel, kidney and pancreatic.
Now excess weight has also been linked to leukaemia, non-Hodgkin lymphoma, and among never-smokers, bladder and head and neck cancers in a large new study.
The authors said these cancers have not previously been “considered as obesity-related cancers”.
Our findings support public health strategies for cancer prevention focusing on preventing and reducing early overweight and obesity
Study authors
And that the impact of obesity on cancer is “likely underestimated”.
The new study, published in Nature Communications , saw researchers examine data on more than 2.6 million Spanish adults aged 40 and under who were cancer-free in 2009.
Researchers examined the body mass index (BMI) scores throughout the lifetime of people involved with the study, saying that previous research investigating the link between weight and cancer has used single BMI scores.
The people in the study were tracked for nine years to see whether they developed cancer.
Some 225,396 were diagnosed with cancer during the period studied.
The Spanish researchers found that those who were overweight or obese in early adulthood – aged 40 and under – appeared to have an increased risk of cancer.
Those who were overweight or obese for a longer period also appeared to have a higher risk.
Our own evidence shows that maintaining a healthy weight throughout life is one of the most important things people can do to reduce their cancer risk, and early prevention in adulthood is key
Dr Heinz Freisling, one of the study’s co-leaders
Overall, some 18 cancers were linked to excess weight.
The authors wrote: “This study shows that longer duration, greater degree, and younger age of onset of overweight and obesity during early adulthood are positively associated with risk of 18 cancers, including leukaemia, non-Hodgkin lymphoma, and among never-smokers, head and neck, and bladder cancers which are not yet considered as obesity-related cancers in the literature.
“Our findings seem to indicate that longer exposures to overweight and obesity (with or without accounting for the degree of overweight and obesity), as well as developing overweight and obesity at younger ages in early adulthood might increase cancer risk.
“Our findings support public health strategies for cancer prevention focusing on preventing and reducing early overweight and obesity.”
Dr Heinz Freisling, from the International Agency for Research on Cancer and one of the study’s co-leaders, said: “The results of our study support a re-evaluation of the cancer burden associated with overweight and obesity, which currently is likely underestimated.”
Commenting on the study, Dr Panagiota Mitrou, director of research, policy and innovation at World Cancer Research Fund , said: “This large study has future public health implications since additional cancers, such as leukaemia and non-Hodgkin lymphoma, have been shown to be linked with overweight and obesity.
“Our own evidence shows that maintaining a healthy weight throughout life is one of the most important things people can do to reduce their cancer risk, and early prevention in adulthood is key.”
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