Green tea could affect fertility at very high doses
A preliminary study found that green tea may decrease fertility in animals, although the doses would need to be extremely high. Scientists experimenting on fruit flies found that larvae exposed to very high amounts of antioxidants found in green tea were slower to develop, were born smaller and exhibited a reduction in the number of emerged offspring. And while the polyphenols made the larvae more sensitive to starvation, they did protect them better against dehydration. Overall, scientists were quick to point out that tea at moderate daily levels was safe for consumption and that further research was needed to evaluate any possible danger to humans at these very high doses.