Risk takers, drug abusers driven by decreased ability to process dopamine

For risk-takers and impulsive people, New Year's resolutions often include being more careful, spending more frugally and cutting back on dangerous behaviour, such as drug use. But new research from Vanderbilt finds that these individuals - labelled as novelty seekers by psychologists - face an uphill battle in keeping their New Year's resolutions due to the way their brains process dopamine...

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