1.   SAD affects about one person in twenty and is caused by a hormonal reaction to the lack of natural sunlight in winter.

2.   And this research was done at the level of body and brain chemistries, even hormonal reactions.

3.   A. My general sense of things is that the enthusiasm for the Internet caused a hormonal reaction in the investment community that ultimately had some very unfortunate side effects.

4.   Red has the power to bolster body temperature and set off hormonal reactions, Mirkin said.

5.   White Northern males typically respond by laughing the incident off and do not show the same hormonal reactions, Nisbett said.