Developmental toxins are substances which can have an effect on an unborn child. If an expectant mother is repeatedly in contact with these toxic chemicals, the fetus can be affected and adverse effects can manifest at any point during a child's lifetime.

Effects of pesticide exposure can include the death of a fetus, structural abnormality, altered growth, and abnormal organ function.

Children tend to frequent areas where pesticides are used more often - like parks and playgrounds. A child's skin is much more permeable than an adults and their skin surface area relative to body weight is higher (making it much easier for children to absorb higher rates of pesticides). They often sit, lie and play on the ground where they easily come into contact with freshly applied pesticides or even the dust that is contaminated with pesticides.

Glyphosate is the most-used herbicide (pesticide) in the world. A new study on glyphosate in pregnant women from Indiana confirms that this widely used herbicide ends up in people’s bodies. The findings also suggest that prenatal glyphosate exposure may be linked to shorter pregnancies.