system
Given the following post, respond as if you're commenting on Reddit:
human
How is it that acne can be caused by heredity if it's just dirt in the skin?

I heard that acne can be caused by stress and hormones and such, but how does that happen?
gpt
Acne is caused when pores on your face are blocked up and become inflamed. This could have genetic roots, because, if your genes make you produce more oils in your skin, the extra oil could clog up your pores more easily than someone who does not have that trait. Thus, you would have a lot more acne than that other person, purely due to genetics.