What is it with 'method' actors putting on timber later on in life? Brando did as well. Must be a bi-product of the method. At least they've improved it since the 1960s and Patty Duke.
https://newyork.methodactingstrasberg.com/alumni/
https://vigilantcitizen.com/vigilantreport/the-hidden-life-of-marilyn-monroe-the-original-hollywood-mind-control-slave-part-i/
https://en.wikipedia.org/wiki/Lee_Strasberg
https://en.wikipedia.org/wiki/Stanislavski%27s_system
https://en.wikipedia.org/wiki/Konstantin_Stanislavski