Do you think that vegan diets reduce the chronic heart disease?
Yes - vegan diets avoid the bad fats that are associated with heart disease. 
I have vegan friends and some of them are ethical vegans. 
What is an ethical vegan as opposed to a regular vegan?
They do not only follow vegan diet but also avoid using any animal products.
Interesting, are you a vegan?
No, but I believe that the vegan diet if well-planned can be quit balanced.
I am sure it can - not every civilization had access to animal protein on a large scale