Tackling just five health factors could prevent millions of premature deaths and increase global life expectancy by almost 5 years.

    Poor childhood nutrition, unsafe sex, alcohol, bad sanitation and hygiene, and high blood pressure are to blame for around a quarter of the 60 million premature deaths around the world each year, the WHO said in a report.

    But while not having enough nutritious food is a big health risk for those in poorer countries, obesity and being overweight pose yet bigger risks in richer nations -- leading to a situation in which obesity and being overweight causes more deaths worldwide than being underweight.

    The world faces some large, widespread and certain risks to health. It examined 24 major health risks, and said recognizing and assessing them would help policy makers draw up strategies to improve health in the broadest and most cost-effective ways.

    Reducing the burden of disease in the poor may raise income levels, which in turn will further help to reduce health inequalities.

    The report warned that although some major health risk factors, such as smoking, obesity and being overweight, were usually associated with high-income countries, more than three-quarters of the total global burden of diseases they cause now occurs in poor and developing countries.

    Health risks are in transition: populations are aging owing to successes against infectious diseases; at the same time, patterns of physical activity and food, alcohol and tobacco consumption are changing.

    Understanding the role of these risk factors is important for developing clear and effective strategies for improving global health.

    The Geneva-based U.N. health agency listed the world's top mortality risks as high blood pressure （responsible for 13 percent of deaths globally）, tobacco use （9 percent）, high blood glucose （6 percent）, physical inactivity （6 percent）, and obesity or being overweight （5 percent）.

    These factors raised the risk of chronic diseases and some of the biggest killers such as heart disease, diabetes and cancers, and affected "countries across all income groups -- high, middle and low," it said.

    The poorest countries still face a high and concentrated burden from poverty, undernutrition, unsafe sex, unsafe water and sanitation," it said. "At the same time, dietary risk factors for high blood pressure, cholesterol and obesity, coupled with insufficient physical activity, are responsible for an increasing proportion of the total disease burden.

    控制五個健康因素能夠減少數以百萬級的的早產兒死亡和延長全球預期壽命長達五年。

    全球衛生組織在一份報告中稱，在全球每年6千萬的早產兒死亡中，有四分之一要歸責于兒童期營養不良，高危性行為，酗酒，環境及醫療不良和高血壓。

    盡管在貧窮國家中是兒童期營養不良造成了巨大健康風險，但是在富裕的國家，肥胖和超重是產生風險的主因，導致了肥胖和超重造成的死亡多于體重不足造成的死亡的現象。

    整個世界面臨著一些巨大的，廣泛存在特定的的健康風險 已經有24個主要健康風險被檢測出來，而且據說將其整理并評估將會幫助政策制定者以最廣泛和最有成效的方式制定戰略來提高健康水平

    減少在貧窮地區的治病負擔可以提升收入等級，在將來可以減少健康的不均衡。

    該報告警告說盡管一些主要健康風險要素，像是吸煙，肥胖以及超重經常出現在高收入國家，但是超過四分之三的全球疾病總負擔發生在貧窮和發展中國家。

    健康風險正在發生轉變： 人類正在應付傳染性疾病，與此同時，體育鍛煉和食物，酒類和香煙消費也在發生變化。

    理解這些風險因素的角色對于制定清晰有效的戰略來提高全球健康非常重要。

    位于日內瓦的聯合國世界衛生組織列出了世界級的死亡風險像是高血壓（占全球致死比例百分之十三）,吸煙（百分之九）,高血糖（百分之六）,機體功能喪失（百分之六）,以及肥胖和超重（百分之五）.

    這些要素提高了慢性病的健康風險，而一些最大的致死因素例如心臟病，糖尿病和癌癥，報告提到，影響到"橫跨所有國家，不論高中低".

    報告提到：最貧窮的國家仍然面對著嚴重的來自貧窮的負擔，營養不良，高危性行為和環境衛生。 與此同時，食品相關的風險要素例如高血壓，高膽固醇和肥胖，伴隨著的機體功能減弱，在總的疾病負擔重的比例在不斷上升。