Yes different diets are needed for people who have different blood types. There is no one cure-all diet for everyone. People need different diets for different needs and not everyone needs a diet.
The diet of religiously observant Jews is made up of Kosher food. However, kosher food is not a style of cooking, it simply refers to food that is prepared and consumed according to 'kashrut'. "Kashrut", which is what Jewish dietary law is called, comes from the Hebrew root Kaf-Shin-Reish, meaning fit, proper or correct. It is possible to list quotes about food preparation and consumption from the Torah, however, that wouldn't actually answer the question as to what the Jewish diet is. In truth, the diet of Jews is largely influenced by the country they are from. For example, the diet of Polish Jews was traditionally hugely different from the diet of Jews from countries such as Morocco, Italy, Yemen, India, etc. As such, it would be impossible to outline the diet of different Jewish communities in this forum. A quick comparison would be that Eastern European Jewish diets would favour beef, chicken, and various types of dumplings while a Moroccan Jewish diet would favour lamb, chicken, fish, and a more complex use of spices, fruits, and vegetables.
Different Diets work for different people. By doing research on particular diet type, you can see which one works for you. As for that particular diet you can go to http://www.webmd.com/diet/features/the-fruit-flush-diet and get reviews on this diet.
Keeping kosher.
Diet does not have a huge amount of effect on your blood type, so everyone should just eat healthy food and a balanced diet. But some people have suggested different diet for different people, for type A, fish and vegetables are suggested.
You should contact your local doctor to find out which is perfect for you. It varies on different people. You can also go to your local pharmacy for different diet supplements.
Oh yes, we Canadians eat pie. The Canadian diet is not greatly different from the American diet.
It was designed to preserve health standards.
That is the beauty of the people and their diet. You know about how to get best from all types of diet due to modern science.
The personality diet is designed on the principle that all people are different, so each diet plan should be individualized to one, specific person. The diet analyzes an individual's strengths, weaknesses, and abilities, and creates a personalized diet for him/her. Many people have found this diet to be effective. http://www.freedieting.com/personality_type_diet.htm
One of my friends is a retired doctor, and he said that Passover is the time of year for the removal of gallbladders. Something in the Passover diet "wrecks" gallbladders in some people, but I haven't found out what and why.
Yes there are many diet plans out there for the different ways people eat such as vegetarians and other with religions that keep them from eating different things such as meat or pork or other things.