More than 3,600 chemicals used in food packaging or preparation have been detected in human bodies, some of which are hazardous to health, while little is known about others, a study said Tuesday.

Around 100 of these chemicals are considered to be of “high concern” to human health.

The European Union is in the final stages of banning the use of PFAS in food packaging. The EU has also proposed a similar ban for bisphenol A from the end of this year.