What are some of the best alternative theories to MPB as well as best routines/methods to combat it?

I’ve suffered from side effects using finasteride and think the current DHT theory is not giving the full picture
of how pattern baldness occurs. I’m interested in knowing any personal research you’ve done and what methods you’ve uncovered
that show any results. What are the most popular alternative theories to this problem? What are some theories/methods that
are a waste of time?