A study of nearly 10,000 adolescents funded by the National Institutes of Health (NIH) has identified distinct differences in the brain structures of those who used substances before age 15 compared ...

A chemical substance is a form of matter having constant chemical composition and characteristic properties. Some references add that chemical substance cannot be separated into its constituent ...

During chemical reactions, atoms in the reacting substances break their bonds and re-arrange, forming different chemical ...

PFAS, short for per- and polyfluoroalkyl substances, are not called "forever chemicals" for nothing. These ...

Every country has a published controlled substance list, but the named substances are only common examples. The list also covers analogs and defined chemical space around these substances, which ...

A copy of each specified type of health and safety study which is in their possession at the time the chemical substance is listed; A list of the specified types of health and safety studies known to ...