EPQ- Cultural eating behaviours

For my EPQ I would like to investigate cultural eating  behaviours. This will cover a wide range of things. In order to conduct this study I am going to create a questionnaire( primary data) asking various questions about peoples eating behaviour and where they were born as well as their parents, this will then enable me to separate the English heritage individuals from the partly and non English heritage individuals so I can contrast my data. Not only will I be using first hand date but I will also look in psychology books and use the internet to find out more about this particular topic. 

My main investigations are: 

To find out if people from other countries or people with families from other countries that have lived in England for 3 or more years have adapted their eating habits and behaviours through the influence of the country compared to people that have lived in England for less than 3 years. 

Possibly look at eating disorders among different cultures and reasons for this(books)  

Find out if the influence of cultural individuals has an impact on English/British born people with no cultural heritage(close family)

To find out which country eats most healthy and less or more junk food/fast food.