I argue social media is a profound risk to anyone. It's an entire industry that's made to exploit every insecurity and vulnerability within a human psyche. Nervous about vaccines? Sure, you can go to your local doctor, but in the meantime you ask your fellow parents on Facebook and suddenly someone tells you that not only do these vaccines have the potential to fuck up your child for life, that doctors are totally in denial about it and no one in your friend group has ever had to deal with measles but one or two probably claim to have a vaccine-injured child, so do you really want to risk it?
This happens over and over again for anything. Vaccines is just one known example. I'm also talking about gay people. People who have sex before marriage. Immigrants. People with suspiciously dark skin tone. Body image. etc.