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Fluoride, a naturally occurring mineral found in soil and water, is widely recognized for its role in reducing tooth decay. Recent research conducted by Columbia University indicates that there is no significant link between maternal fluoride exposure and low birth weight infants. This study analyzed data from over 11 million births across 677 U.S. counties between 1968 and 1988, providing reassurance to parents regarding the safety of fluoride.

The study utilized a novel approach by measuring community-level fluoride exposure through public water systems rather than relying solely on spot urine samples, which have raised concerns about accuracy. Matthew Neidell, a professor at Columbia’s Mailman School of Public Health, emphasized the importance of this method for reflecting real-world population exposure.

This comprehensive analysis compared birth outcomes before and after the introduction of water fluoridation while using non-fluoridated counties as controls. The focus on birth weight serves as an important indicator of infant health and future well-being.

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