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    Thursday, 13 September 2018

    Cancer to kill 10m this year despite better prevention: study of IARC


    Cancer will kill nearly 10 million people this year, experts said Wednesday, warning the disease’s global burden continues to rise in spite of better prevention and earlier diagnosis.
    An estimated 18.1 million new cancer cases were predicted worldwide for 2018 — with 9.6 million deaths, said a report of the International Age­ncy for Research on Cancer (IARC).
    This is up from estimated 14.1 million new cancer cases and 8.2 million deaths reported in the agency’s last assessment just six years ago.
    The toll is rising as populations expand and grow older, and people in developing nations adopt unhealthy, high-risk lifestyles traditionally associated with richer economies.
    An increased focus on prevention — encouraging people to get exercise, quit smoking, and eating a healthy diet — led to a drop in certain types of cancer in some population groups, the IARC said. Yet the overall number of new cases is racing ahead of efforts to contain the disease.
    “These new figures highlight that much remains to be done to address the alarming rise in the cancer burden globally and that prevention has a key role to play,” said IARC director Christopher Wild.
    One in five men and one in six women will develop cancer during their lifetime, the study said, and the World Health Organization expects the disease to be the leading cause of death in the 21st century.
    There are dozens of types of cancer, and the agency found large differences between countries due to a host of socio-economic factors.
    Lung cancer, biggest killer
    Asia, unsurprisingly given its enormous population, accounted for near­­ly half of all new cases and more than half of cancer deaths worldwide in 2018.
    Lung cancer remains the biggest killer overall, responsible for some 1.8 million deaths — nearly a quarter of the global toll.
    For women, breast cancer caused 15 per cent of cancer deaths, followed by lung cancer (13.8 per cent) and colorectal cancer (9.5 per cent).
    The figures highlighted a worrying rise in lung cancer rates for women — it is now the leading cause of female cancer deaths in 28 countries including Denmark, the Netherlands, China and New Zealand.
    The data showed that cancer types traditionally associated with rich country lifestyles — more overweight people who are less inclined to exercise — were increasingly common in developing nations.
    “One of the things that happens with transitions towards high levels of socio-economic development is the environment changes,” Freddie Bray, IARC’s head of cancer surveillance, said. “There is more physical inactivity and that happens to be a particularly high risk factor for colon cancer, for example.”
    Momentum lacking
    Bray said models using current cancer statistics and predicted trends forecast as many as 29 million new cases a year by 2040.
    “The extent to which this is becoming a major public health problem and the diversity of cancers that we see in different regions is also a striking point,” Bray said.
    Anti-cancer measures could take the form of stricter tabacco controls to limit lung cancer, or initiatives to encourage physical activity to reduce the risk of colon cancer. But the study warned that global efforts to rein in one of mankind’s biggest killers still “lacked momentum”.
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