multiple font options?

The prompted posts that this gave me has one similar to what I'm thinking, but all the forums I've been on has seen resurrecting an old thread as taboo, so I'm starting a new one.  Also, it had five downvotes, so I'm giving a full explanation for why I'm suggesting this.

I know a few people with dyslexia, and the font of the app is very difficult for them to read on bad days.  It's been scientifically proven that those with this impairment have a much easier time reading fonts with a serif, like times new roman, or fonts with very distinct lettering, like comic sans. Fonts without a serif tend to cause more jumbling of the letters, because they aren't distinct enough from each other.  There's even a font designed specifically for people with dyslexia- its called Dyslexie, and has its own website.

Adding the option to pick a font like this will make the whole app and site much more accessible to these people.  It will cause less stress on them when trying to read a lot of text, and fewer headaches/migraines as well.  Of course, the default would still be there for everyone that wants it, but I really think this would improve the app for a lot of people.