There is a popular subreddit for people with hair loss ("tressless" with almost 500k members) and anyone who recommends the drug Finasteride (banned in Sweden and full of bad side effects e.g. depression, erectile dysfunction, muscle atrophy) gets upvoted and anyone who recommends against it gets their post removed from the front page of the subreddit and a squad of people attacking you. It is obvious some pharmaceutical company is behind this.