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From BoingBoing: Psychiatrists from Pavia University have associated early romantic love with a biochemical known as nerve growth factor (NGF).

Apparently, levels of NGF in the bloodstream were significantly higher in subjects who were in the early stages of romance than individuals not in a relationship. Interestingly, “subjects in love who—after 12–24 months—maintained the same relationship but were no longer in the same mental state to which they had referred during the initial evaluation” did not have elevated NGF levels.

Dating circa 2012: Personality tests are passe. Swabbing partners CSI-style on first dates is where it’s at. Biochemicallove.com is available, have at it.

[tags: biochemical+love]