There is a tradition of data and metadata privacy based on Brandeis's "The Right to Privacy" from 1890. You are correct that this tradition is partly rooted in

There is a tradition of data and metadata privacy based on Brandeis's "The Right to Privacy" from 1890. You are correct that this tradition is partly rooted in 4th amendment jurisprudence, but it has deeper foundations in English common law. Amy Gajda's Seek and Hide is an accessible introduction to the area if you are looking for a deeper dive into the subject. Many of the landmark privacy-as-bodily-autonomy decisions are related to reproductive health, but there are others. McFall v. Shrimp is another important case in the area and concerns forced medical procedures rather than reproductive health: https://en.m.wikipedia.org/wiki/McFall_v._Shimp https://en.m.wikipedia.org/wiki/McFall_v._Shimp The court found in that case that an individual could not be compelled to donate bone marrow, even though it was necessary for another to live, because that would violate "the sanctity of the individual."