Is It Possible To Increase Or Decrease The Height Of A Person?

Hi! Thanks for your help! I ve got an intriguing query that I d like an answer to, if you please: Is there a pill on the market today that makes it possible for someone to become shorter? What I mean is, say I am x feet tall, x inches tall and when I took this particular pill, it gradually reduced my size to x feet, x inches, reducing my size daily/weekly/monthly/annually/ by x amount of inches. Vice Versa: Is there a pill that is capable of making you taller. Or are both of these things in any type of trial period? If these things are NOT in any type of being-made-currently process, is there an obvious (or a not so obvious) reason why? I m not kidding, I promise. I just wanted an answer on this question because the internet just has been turning up pretty dry on this question of mine. :/ Thanks so much for any help you can give me! :) -J