80% of Americans test positive for chemical found in Cheerios, Quaker Oats that may cause infertility, delayed puberty

Four out of five Americans are being exposed to a little-known chemical found in popular oat-based foods — including Cheerios and Quaker Oats — that is linked to reduced fertility, altered fetal growth and delayed puberty.

The Environmental Working Group published a study in the Journal of Exposure Science & Environmental Epidemiology on Thursday that found a staggering 80% of Americans tested positive for a harmful additive called chlormequat.

The “highly toxic agricultural chemical” is federally allowed to be used on oats and other grains imported to the US, according to the EWG.