I've got a 16-year-old adept doctor at the moment who dislikes herbs. Early this morning I had an event that caused several villagers to become ill and I discovered that my only doctor had died overnight. I grabbed the nearest kid at random and used her to heal them. This evening I came home and I see she's grown up and become an adept. She could have only been a trainee when she turned 14 so she must have found several people to heal while the game was off. If I drop her on any of the herbs she's off like a startled rabbit. It'll be interesting to see how long it is before she becomes a master.

I must admit that I have the same problem. I've only had 1 Master Doctor. I do a terrible thing now, I make my villagers sick from eating bad stew, and the doctors have to heal and increase their abilities.

I opened the game about 12 hours after my last post and she's now a master doctor - at 22. I've now set her to parenting and have picked a young 14-year-old lad as her assistant, in case she has to look after children. When last seen he was happily wandering from plant to plant - I made sure beforehand that he had no aversion to herbs.