Problem with this and just about anything related to the human body (and a million other subjects) is that the answer usually is: it’s not that simple.
The human body is extremely complicated with countless different proteins and system each performing multiple tasks all mixed throughput your body and with all of our knowledge we probably still only know a fraction of what there is to know.
Typically if someone comes up with “this one simple trick”, the answer is “it’s not that simple” and if someone sells you a simple solution (zinc! Ivermectin!) it’s bullshit