1·People have always focused on maternal age, but now we know that paternal age matters, too.
人们总是关注母亲怀孕的年龄，但是现在我们知道父亲的年龄也是非常重要的。
2·The study found girls to be most affected by absentee dads, although the researchers caution that paternal absence can foster other problems such as lack of support or discipline.
尽管研究人员警告说，父亲角色的缺失可能招致诸如缺乏支持或训导之类的其它问题的发生，但是研究发现女孩受父亲缺失的影响更大。
3·The study did not show any connection between paternal age and bipolar disorder.
这项研究并没有指出父亲年龄与孩子患躁郁症之间的联系。
4·But new evidence underscoring the impact of paternal age on reproduction continues to accumulate.
但是父亲的年龄会对生殖产生影响的新证据越来越多。
5·Still, some experts caution that the association of paternal age with these problems is just that: a possible link with no proof of causality.
然而，一些专家警告说父亲年龄和这些问题之间的联系或许仅仅是这样：一个没有证据证实因果关系的可能存在的联系。