They say prevention because you can't predict it i guess you know that? I mean there are people who stop balding at NW2, they take finasteride out of panic and after 10 years of sides and struggles they say, "at least it didn't progress" but nobody knows exactly if it wouldn't had stopped and didn't progress further without the treatment... It's very well made and marketed, very hard to prove sides, very hard to prove efficacy, i recently saw a study that showed that after 5 years not even 10% miniaturized hair got terminal on it, very hard to predict or prove something on it and a lot of contradicting studies with a lot of conflicts of interests and many other things, not to mention the history and recent news of it's manufacturer...
Imaging trusting and actually taking a drug made by someone who killed 500k people in 1 year with one of it's drugs, besides the other drugs he made and destroyed peoples lives, there is a site dedicated to the massacre he did with his pills and pharmaceutical company. He even contaminated the f*****g lake near his factory and labs with all the chemicals and infected the water that was going into peoples houses in the town near him, he is really fucked up and he is very powerful, very rich and with big connections, he actually does not give a f***, we could all die tomorrow and nothing would touch him, and that says a lot!
Take a look at this, MERK KILLER DRUGS LMAO :
http://www.propeciasideeffects.co.uk/mercks-killer-drugs---merck-make-drugs-that-kill-people.html
He even tried to get it approved for kids under 18 years old, but the FDA said it was too much. After he tried to prescribe it for cancer, but they found him manipulating the studies to show efficacy of it on prostate cancer and they actually found out that it increases the risk of getting a more aggressive and stronger type of cancer while on it.. Really, really fucked up and with all that, he still does not pay sh*t for his crimes, because of people who are actually taking his drugs like sugar pills. As long as he has fools who ingest what he is making and trusting him, nobody can actually touch him! This are the Hitlers of our times, they wear all masks and they kill you through pills, social media manipulation, foods, drugs, alcohol, ciggs, etc bla bla