Just when we feel like we've got a grasp of what's healthy, the rules shift. For years, people were encouraged to refill plastic bottles in a bid to reduce landfills. Then we discovered those bottles contained BPA, or bisphenol A, a compound that can dissolve into water and has been shown to interfere with hormones. Now, it turns out that BPA-free bottles could also put your health at risk.
New research conducted by Peking University in Beijing has found that a common BPA substitute, fluorene-9-bisphenol, binds to the body's estrogen receptors. Tests on mice found that it caused animals to have smaller wombs and pups, as well as miscarriages, New Scientist reports.
So what does this mean to you? While more research on humans is needed, Frederick vom Saal of the University of Missouri admits the findings are "pretty scary." If the compound has the same effect on humans, he says it has the potential to cause infertility issues.
Vom Saal recommends using plastic of any kind as little as possible. Opt for glass bottles when available and avoid putting plastic containers in the microwave or dishwasher, as they degrade with heat.
Would you consider switching to glass bottles?