How to handle the array of objects in Ember Js Handlebars

I'm getting the response from the server like

category:{
    listOfCategory: [
        "diabetes",
        "general"
    ],
    id:1

}

using Ember data findAll method. I'm returning this to my model and I'm trying to display in hbs file using each loop.

js code

model(){
       return this.store.findAll('category');
}

hbs code

     <h1></h1>

Output :

diabetes,general

I want to display as separate category.