What is the real cause of getting zits/pimples?

Question

What is the real cause of getting zits/pimples?

Answer 1

stress

Answer 2

Puberty, Milk, Fatty greesy food, Not washing your face!  

Answer 3

Sometimes medication--the anti-psychotic Risperdal has a side effect of acne, and I got acne, BAD! I had to stop the meds, and go on antibiotics and 2 antibiotic creams. It took 3 months to stop. So, yeah, meds. Also, hormones, oils, bacteria.  

Answer 4

calories!

haven't you noticed that when you eat chocolate.. you get lots of them?

Answer 5

oil, dust, dirty particles, and its a part of growing up...puberty...