The researcher said that before the body begins to freeze, cold can cause changes in brain chemistry which lead to hallucinations.

VOA: special.2010.02.24

There might be these, what are called epigenetic differences that I mentioned changes in the structure around DNA, and those changes lead to differences in which fraction of the total genes in the chromosomes are being expressed by a particular cell.

可能存在的差异,叫做表观遗传差异,我之前说过的DNA结构上的变化,而这些变化导致,在特定细胞中,染色体组的全部基因中,只有一部分表达出来

耶鲁公开课 - 生物医学工程探索课程节选

Too much cortisol and adrenalin can result in physical problems and changes that lead to stress-related sickness.

VOA: special.2009.03.24

When left untreated,however, it can lead to changes in a person's physical appearance and even death.

VOA: special.2010.07.06

Main message? Each one of us makes a difference every single day we impact the world around us and if we would just think about the consequences of the little choices we make what we eat,wear,buy, how we interact with people,animals, the environment then we start making small changes and that can lead to the huge change that we must have."

VOA: special.2009.11.18

Now he would just like to walk again. TBI can lead to physical disabilities as well as changes in mental ability, personality and behavior.

VOA: standard.2010.05.25

They say the changes excessively limit the rights of the individual and could lead to abuse.

VOA: standard.2009.09.10

But Iowa Democrat Alan Bohanan says he does not think that the deeply divisive issue will lead to significant changes in the House of Representatives.

VOA: standard.2010.03.25

But Masha Lipman from the Carnegie Endowment for International Peace in Moscow says she does not expect the protests will lead to significant changes in the Kremlin.

VOA: standard.2010.06.10