Do you know what blood type are? If you don't, you can ask your doctor to verify this for you, and it is a very useful thing to know!
If you already lead a healthy lifestyle, why not add in supplements that tailor to your specific blood type.
It just seems to make sense, right?
Check out what supplements are recommended for your blood type.
http://www.webmd.com/diet/eat-right-for-your-type