Are you aware of what you’re eating? Are you (part-time) vegetarian, vegan, raw, paleo? I can tell about myself, that I care about what I eat most of the times (my care exponentially decreases with wine or beer consumption). I feel to be – because of my studies and my PhD but also due to having “really diagnosed” coeliac disease – uncomfortably aware of many impacts that nutrition in Germany has on sustainability issues. (There is a more scientific way of thinking about sustainable diets but below this article you may as well find more easy-to-read information.) , 
Naturally, it therefore almost had to become THE trend topic. What else, if not a picture of a vegan-raw-regional and yummy bowl of something could express your healthy, trendy, conscious, open-to-the-world lifestyle? Many websites show us the “10 easy ways” or “5 tips” to eat more healthy and sustainably.
Food is culture and traditions.
Nevertheless, we should not forget that food and food culture has a long tradition and takes place in complex social context . A good example for this is a study about doggy bags. Research reveals that restaurant guests on the one hand morally support doggy bags as means not to waste food. On the other hand, they feel shame and regret when actually asking for a doggy bag in a restaurant thereby putting emphasis on the fact of not finishing their food . This is not to say that you cannot change food practices. However, those changes take their time for every person and for society as a whole.
Is food your starting point for a sustainable lifestyle?
More information about sustainable diets