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Over the past three decades, there has been a steady increase in the average age of parents. Advances in fertility science mean that people can, literally, put their eggs or sperm on ice and delay the start of parenthood. 在过去的三十年里，人们成为父母的平均年龄不断增加。生育科学的进步确实使人们可以冷冻卵子或精子，从而推迟做父母的时间。 Many large companies, such as Apple, Facebook and Google, now offer egg freezing to employees as part of their healthcare package. Putting off having a baby has never been easier or more socially acceptable. 像苹果、脸书及谷歌等大公司如今为员工提供卵子冷冻作为公司福利的一部份。推迟生孩子从未像现在这般容易，也从未像现在这般被社会所认可。 However, parents have a moral obligation to give their child the best start in life. 然而，父母们有道德义务给孩子们提供最好的人生开端。 But children born to mothers over the age of 35 and fathers over the age of 45 are at greater risk of having genetic and neurodevelopmental disorders, such as schizophrenia and autism , which arguably affects the child's quality of life. 不过在人们生孩子的时候，如果母亲的年龄超过35岁，且父亲的年龄超过45岁，那出生的孩子罹患精神分裂症和自闭症等遗传和神经发育性疾病的几率更大，可以说这会影响孩子的生活品质。 | 
