The meaning is: It's something I can't eat. Literally: but it's something that I myself have prohibited eating. This is not prohibited in the English sense, necessarily. It can just be that you chose not to eat it, or because you are on a diet, gluten intollerant, and so on. Anni.

Exacto.....tienes que diferenciar entre: 1- "pero es algo que me tengo prohibido comer": Tú misma te has prohibido comer algo. 2- Otra cosa es "pero es algo que tengo prohibido comer": Alguien te ha prohibido comer algo

Gracias Sergio y Juan!n @Sergio, Creo que es correcto ya que es de mi libro AULA International 2.

The correct way is "Pero es algo que tengo prohibido comer" that means, but, this is something I have restricted to eat. Or but, is something I have prohibited to eat. If you want to use "me" it could be "Pero es algo que me tengo prohibido comer" thats a restriction imposed by yourself for something to have not to eat.

It means "But it's something I have prohibited myself to eat". "Algo" is something. We use "me" to refer to myself. It is a pronoun. I hope it helps.