Myasthenia Gravis Epidemiology Male1: If someone has Myasthenia Gravis, are they more likely be a male or a female? Male2: That’s interesting question because the patients that do get Myasthenia Gravis are distributing what we call—so, there is a peak of women in their 20s and 30s and there’s a peak of men in their 60s and 70s. So, to have across the board statement, it’s more useful to talk about the age and the sex preference. Male1: What’s the youngest kid or youngest person you have seen with Myasthenia? Male2: In the young teens, I don’t remember the exact age young teenager.