Re: not sure where to post this question
There are many diets, but there is one main rule if you want to be healthy. If it grows, eat it. If it is in a box or package, don't.
You will have to heal your gut before you can do well on raw foods, so no matter how healthy that is, that would not be good for you. There was a time that I could not eat even a banana, or a tomato, raw.
So first you must concentrate on healing the gut. L-glutamine works wonderfully. You should take probiotics and digestive enzymes with meals and even between meals. Chew your food really well. Try to find the most nutrition you can in cooked foods, especially lots of soups, broths and vegetables. Don't take a lot of vitamins and supplements during this time, just concentrate on healing your intestines. See how yogurt or kefir agrees with you. Your goal should be no gas and no bloating after eating. Your stools should be formed, and have almost no odor.
Then see what foods agree with you for your diet. Try first a diet of brown rice and vegetables. See how you feel on that. Then change up and try a diet of protein and vegetables. Then try vegetables and fruit. Try only cooked or lightly cooked food until you heal. It may not be a diet for the rest of your life (or it might), but you have to find a diet that is right for you NOW.
It may take you a year or so to heal your gut. Read Jordan Rubin's books and Michio Kushi's books. You can check with your local library for their books.
I would suspect you would do well on brown rice and vegetables, especially if you have a family history of cancer. And since you are thin, you don't have to worry about the carbs in brown rice. Do not use white rice. After a time where you are comfortable with your diet and its lack of adverse symptoms, add in one thing at a time, S L O W L Y. Go only by your own body and not by what someone else says is healthy.
The probiotics and increased vegetables should take care of the constipation. If not, add magnesium (
Epsom Salts is cheap and effective)