What is the causes of teenage?

Answer 1

They want to be 'cool', or want to fit in, or have nothing to do.

It can make you have cancers, daeth, many killer diseases.

or

because they just feel like it, it not always because they want to fit in or they have nothing to do....

Answer 2

Teenage acne is primarily caused by hormonal changes during puberty, which can lead to increased oil production and clogged pores. Genetics, diet, stress, and certain medications can also play a role in the development of teenage acne.