The first mutation from blood type O was blood type A. A blood types came about when people started to migrate to places which had no animals present to feed from or were not abundant. Since type A mutated from type O, this blood type is very similar to type O and can eat many of the same animal proteins that can be consumed by blood type O.
Famous Type As
George H. W. Bush, Ayumi Hamasaki, O.J. Simpson, Britney Spears, Alan Alda, Adolf Hitler, Lyndon B. Johnson, Richard Nixon, Jet Li, Maki Nomiya, and Rick James.
Research shows that most cancers are type A related, and the majority of A's eat a meat and potato diet and lots of foods unsuitable for their type, it is indeed predictable this blood type would be overwhelmed with high blood pressure, diabetes, anemia, cancer, and heart disease.
The type A is a more of a vegetarian diet. It is the second blood type to evolve as populations settled into agrarian lifestyles. People living in those areas have adapted and evolved due to the demographics. Type A's are advised to consume legumes, beans, cereals, fruits, vegetables, and small amounts of dairy products but eliminating all meats. The type A individual hardly produces much hydrochloric acid and does poorly on meat and dairy as a result. So, Type A’s are recommended to not eat red meat, he/she should also refrain from intense exercising and focus more on yoga, meditation and stretch classes. The reason is that type As consume fewer calories in general when they are not eating meat. There is gene for alcoholism found in Type A’s. They are also generally more vulnerable to cancer, diabetes and heart disease if they do monitor their health more carefully.