The present invention describes plastic materials and food additives that are
free or substantially free from endocrine disruptive chemicals. The plastic materials
may be used in products which are exposed to individuals in which endocrine disruptive
activity is particularly disadvantageous, such as baby bottles, baby toys, food
containers, medical containers, animal cages and medical products. The food additives
may be used in food products that are ingested by individuals in which endocrine
disruptive activity is particularly disadvantageous, such as newborns or the physically
infirm. The present invention also describes a series of assays which, when performed
in combination, provide a novel method for determining the presence of endocrine
disruptive activity.