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The conclusion does not follow from the data in this article. The possibility was not ruled out that the same inborn trait that causes fear of novelty also hastens aging. A cohort of novelty-averse rats should have been left stressfree to answer this important question. Tom PaskalMontreal, Quebec
By Science News -
Worried to Death: Lifelong inhibitions hasten rodents’ deaths
In rats with a fear of novel situations, an exaggerated hormonal response to minor types of stress adds up to a shorter life than that of bold rats.
By Bruce Bower -
EarthSlowing Puberty? Pesticide may hinder development in boys
Long-term exposure to the pesticide endosulfan may delay the onset of puberty in boys.