Accidental Aesop: This show (and its spinoff, Teen Mom) is quite possibly an unintentional deconstruction of Good Girls Avoid Abortion, as it shows very well the consequences of choosing to keep a baby, especially for a teenager. According to at least one study, 16 and Pregnant and Teen Mom have contributed to a rise in support for abortion rights for precisely this reason.
Arguably an intentional Aesop with Teen Mom; it doesn't pull much in the way of punches about how difficult it is to raise children, even with supportive, well-off parents.
Memetic Mutation: At least among the people who watch it: "It's your baby, Matt. Just, like, get it through your head. We had sex a lot."
Tear Jerker: Plenty of times, but one stand-out episode is Nicole, a young woman who lost both her little sister shortly after her birth and her father, who was left heartbroken after the baby's death and died himself a year later. While in labor, she brought a picture of her and her father to have in the room with her. It's also to be said that not only was she one of the most earnest girls featured, but was also mature and in a committed relationship with her boyfriend and the child's father.
Valerie Fairman of season 2 passed away on December 21, 2016 from a drug overdose. She was 23, and left behind her 7 year-old daughter.
The scene when Catelynn and Tyler are putting their baby up for adoption is always heart-wrenching to watch, as although they knew it was best, they still loved and missed their baby very much.
Eric Kennemer, the now-husband of Myranda Trevino and father of her daughter in season 4, was in a serious car accident in January 2017 that eventually caused a stroke due to bleeding in the brain.
The Woobie: Catelynn and her boyfriend Tyler decide they can't raise a child and give her up for adoption. Most of the season is her family screaming at her, mostly because they don't think she feels guilty enough about it.