Even dudes might want to read this. Why? Because it's a pretty good example that whatever personal health info you plug into an app can be shared or sold to groups and individuals you might not want to have that information. For women, data on their cycle might be used against them if they seek an abortion if Roe vs. Wade is overturned.
What are some things that you'll re-use before you throw them out, like those danish butter cookie containers that are always used for sewing supplies? Or those margarine tubs that people re-use as Tupperware?