One side effect of modern life is stress.

现代生活的一个附带后果就是压力。

《柯林斯英汉双解大词典》

Sleeping on your left side may have a negative effect on sympathetic nervous activity.

向左侧睡可能会对交感神经活动产生负面影响。

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Sometimes when you take a common drug, you may have a side effect.

有时当你服用一种普通药物时，可能会有副作用。

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Scientists say the auxin has an indirect effect on buds on the side of the stem to prevent branching.

VOA: special.2009.10.13

A more recent side effect of Ambien that's quite serious is some people become--have the compulsion while they're sleeping to go driving, which is not good.

最近发现安必恩一个挺严重的副作用,有些人睡觉时,会有梦游驾车的冲动，这可不是好事。

耶鲁公开课 - 心理学导论课程节选

Another side effect if you take too much lithium is death, so that's no good to have in sodas either, and it might not have been as big a deal back in the 1920's, but you can imagine with supersizing today, this might be a bigger problem.

另一个副作用是因为摄入锂过量而死，这更说明在汽水里放这种东西是不好的，这在二十世纪二十年代可能没什么大问题，但你可以想象在如今这个什么都超标的时代，这也许会出更大的问题。

麻省理工公开课 - 化学原理课程节选

The case illustrates the difficulty of pinning a side effect to a particular drug based on the scant reports of side effects that come to the FDA. It is extremely difficult to link a side effect, like an inflamed pancreas, with a particular drug.

FORBES: Dark Cloud Over Amylin

"Let's not diminish the effect of tamoxifen by this side effect, " said Peters, referring to endometrial cancer.

CNN: Scientists confirm tamoxifen works but say it isn't for everyone

Last week, Garber was politic about its effect on MLS's lower-league relationships, but the move certainly has a side effect of broadening the power base of a soccer pyramid that has MLS, and its controlled model, at its apex.

WSJ: Soccer's Battle for New York