12 Nov 2009
Low testosterone levels can be influenced by who a person votes for in an election, a new study has suggested.
Researchers at Duke University and the University of Michigan, US, discovered that young men who voted for Republican candidate John McCain or Libertarian candidate Robert Barr in last year's US presidential election experienced an immediate drop in testosterone once the results were announced.
By contrast, men who voted for Democrat Barack Obama had stable testosterone levels immediately after the election ended.
Females taking part in the study experienced no significant change in their testosterone levels.
Duke neuroscientist Dr Kevin LaBar said that this is "a pretty powerful result".
"Voters are physiologically affected by having their candidate win or lose an election," he commented.
A post-election questionnaire revealed that backers of Mr McCain and Mr Barr felt "significantly more unhappy and submissive" that Mr Obama's voters.
Testosterone is important for improving the uptake of oxygen, while the hormone also helps to control blood sugar levels and regulate cholesterol.
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