一些代际之间生活方式和环境的变化导致了这种风险的增加。究竟是什么原因仍是个谜。
Devi Sridhar 教授是爱丁堡大学全球公共卫生系主任。在全球健康领域，我们常谈每一代人都比父辈活得更长、更健康。
Some change in our lifestyles and environments over a generation has caused this increased risk. What, exactly, is a mystery Prof Devi Sridhar is chair of global public health at the University of Edinburgh In the field of global health, we often talk about each generation living longer and healthier lives than their parents.
我们在预期寿命的提升、儿童死亡率的急剧下降以及许多可通过疫苗预防的疾病几乎被根除方面看到了这些进步。
We’ve seen this in the gains in life expectancy, the sharp decrease in child mortality and in the near elimination of many vaccine-preventable diseases.
但自本世纪初以来，这一进展停滞不前，甚至在某些健康指标上出现倒退。以癌症为例，长期以来它被认为是与老年相关的疾病。
But since the turn of the century this progress has stalled, and in some cases several health metrics have gone backwards. Take cancer, which was long thought to be a disease linked to old age.
虽然大多数癌症仍然主要发生在老年人身上，但一份新报告指出，许多癌症在50岁以下人群中呈上升趋势，常被称为“早发癌”。
While most cancers do indeed still occur in elderly people, a new report highlights that a number of cancers are increasing in people who are under 50, often referred to as “early onset cancer”.
该报告由世界癌症研究基金会进行，分析了过去20年中英格兰、美国和荷兰的12种不同癌症类型的数据。结果并不乐观。
The report, undertaken by the World Cancer Research Fund, looked at data from 12 different cancer types in England, the US and the Netherlands over the past 20 years. What they found isn’t pretty.