Speaking of science... there are plenty of doctors that believe heredity only plays a tiny role in heart disease.
So you should definitely include that perspective in your research:
http://www.goveg.com/heartdisease.asp
"Studies have shown that a vegan (pure vegetarian) diet—rich in whole grains, fruits, and vegetables—can stop and even reverse heart disease."

http://www.americanheart.org/presenter.jhtml?identifier=4777
http://www.whatisheartdisease.us/Heart-Disease-Vegetarian.html

 It's all about diet!  Cancer, diabetes, and environmental destruction are all entangled with the way we eat.
But then again, I try not to take myself too seriously... thanks for keeping it humorous "D-Y".

Yay bikes!

Eric