Wow, faced with a vegan family, that can be challenging.
Here's a post on some misconceptions, among them a paragraph about the dying young thing: http://www.marksdailyapple.com/prima...isconceptions/
Dietary cholesterol doesn't raise blood cholesterol. And interestingly enough, people with low cholesterol have just as many heart attacks as those with high cholesterol. But some reading:
The definitive guide to cholesterol: http://www.marksdailyapple.com/cholesterol/
Big Pharma: http://www.marksdailyapple.com/big-pharma-big-pfarce/
The definitive guide to dairy: http://www.marksdailyapple.com/dairy-intolerance/
Is all butter created equal: http://www.marksdailyapple.com/grass-fed-butter/
The vegetarian myth book review: http://www.marksdailyapple.com/vegetarian-myth-review/
On soaking nuts: http://www.marksdailyapple.com/soaking-seeds-and-nuts/
Regarding insulin & insulin resistance: http://www.marksdailyapple.com/diabetes/
Those are just a few.
Hope this helps a little!!