How does HRT affect muscle mass for a slender MTF?

[Lady_Oracle]

It's not! She just needs to make sure she has a well balanced diet with a focus on protein imo. O and can't forget plenty of water!

[Joelene9]

  I actually gained muscle mass.  My doc says it is unusal, but not unheard of.  He said that my T levels were over the top for a normal male that the too much T had actually turned off the androgen receptors in my muscles.  I had those "Olive Oyl" arms before HRT.  6 months in,  I noticed that I was lifting heavy objects much easier than ever in my 58 year history at the time.  I did get weaker during this past July's record heat without an air conditioner.  But the strength I gained is coming back now.  Most muscle gain is in my thighs. 
  This is actually welcome here.  I need that to do the "male" things I still love to do.  Wheeling that 225 lb telescope off and on the truck nightly at the dark sky site is easier than before.  I own that telescope for 20 years now and used the same gear and method of loading and offloading during that time. 

  Joelene