Does the Hay diet (essentially not mixing protein based food with carbohydrate based foods in the same meal) actually produce good results? Are such restrictions unhealthy or excessive?

  • I've not heard about this. I have heard about not mixing fats and carbs in a meal though. I always thought you should have protein with just about every meal. May 2, 2011 at 16:33
  • Do you have an idea what the diet would be founded on? And perhaps do you have any reason to doubt its effectiveness? Perhaps you don't understand why it would help or that its not nutritious enough. I suggest you edit that into the question.
    – Ivo Flipse
    May 2, 2011 at 18:07
  • @Ivo Flipse, what you suggest in the edit is implied from the question's present state, if you feel it's convoluted, why not make the edit yourself.
    – Vass
    May 3, 2011 at 13:26
  • 3
    I try to nudge users into doing such things themselves, so they hopefully learn how to do it better next time. If I would edit every question myself, users might start relying on me doing it for them, rather than putting in some effort themselves :-)
    – Ivo Flipse
    May 3, 2011 at 13:46

1 Answer 1


I have never heard this called the 'Hay diet', but I am familiar with the concepts involved here. From my learning, it's simply called 'food matching', and simply talk about which foods should be eaten with which. The basics, as I've learned them, go like this and are pretty simple:

  • Do not eat grain and meat at the same time.
  • Fruit (including berries) should be eaten alone.
  • Vegetables go with anything.

That's it. The thought behind it is to not give your stomach things with two different digestive needs at one time. I've mainly seen it used in people with chronic heartburn and other stomach problems, and the results there have definitely been very, very good. I know 3 people personally who had heartburn almost every day of their lives for 10 or more years experience relief inside of a week. I have never seen food matching used in terms of weight loss or athletic training, so I cannot comment there.

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