The January 2017 edition is all about gender identity. It seems well researched and I learned a lot by reading it.
http://www.nationalgeographic.com/content/dam/magazine/rights-exempt/2017/01/Departments/EditorsPage/coveravery.adapt.590.1.JPG
Your local library almost certainly has a copy you can read.
National Geographic/01/2017
One of the best things that have happened this new year! As the subscription cover of a transgender girl suggests, it will be the children who show us the way.
This is another ray of hope for me and a well informed set of articles to share in a mainstream magazine. Worth the cost.
I bought it the other day but i have't read it yet. it looks pretty good from skimming through it. I'm glad it you found it good. I will have to get to it.