Here’s my vague understanding of why this happens with melatonin; if someone can correct me I’ll have learned something.
Taking supplements your body naturally produces, like melatonin, creatine, and some weight loss products in large doses makes your body turn off its own production. You’re also training your body to process and live with more than it needs, and considering it always wants to reach homeostasis, you end up needing more of it to have the same effect (like many drugs).
Back in the 90’s a lot of people on diet pills ended up gaining a lot of weight back once they stopped taking the pill because their bodies took a long time to produce the same chemicals naturally, having essentially been overdosed for a while.
The scary part is how many people just don’t seem to care. Hey, did you know you can get cheap bullshit on Temu? The idea that you’ll one day have to compete for your job with someone with an implant is scary, not for them because they signed up at betterhelp.com to have a professional talk them off a ledge once a week. Hopefully they won’t be much of a threat because of all the single people in their area. Also, boner pills anyone?