Paleo diet success: "no drugs, good numbers"

I recently received this brief e-mail from a friend regarding his parents response to the Paleo diet:

Both active for their age, my dad will be riding the Courage Classic with me, mom in step aerobics (both 64 yrs old). Both high cholesterol, their whole life.  Mom about to go on doc recommended drugs. I brought the Paleo Diet, from your discussion with me a couple years back, to them. Two years later, no drugs, good numbers. Their PCP was blown away. They are hooked.