I was 49 when diagnosed. It helped me out a lot. I read every book I could find about Asperger's and was amazed at how they described my life so accurately. This diagnosis also led to a diagnosis of Sensory Integration disorder. I worked with an Occupational Therapist and learned a lot of ways to deal with things in my environment (sounds, tastes, textures) that used to cause me to get irritated or agitated.