When I first started Atkins my mother (she's a nurse) went on and on about how unhealthy it is and how all of the doctors she works with think its so unhealthy. But the proof is in the pudding! She's now a firm believer in Atkins and does it along with me. She couldn't believe that I'd lost 20lbs in 1.5 months with energy and good health to spare! So she gave it a try and also looked and felt better almost immediately... so we've both been living low-carb for years now (i've slipped up a few times, but I'm smartening up), and she's been busy converting the docs that she works with.
At any rate, I couldn't tell you how many people I've converted to this way of eating. They all want to know what I've done and they have since hopped on the low-carb train
However, if I ever feel uncomfortable about discussing low-carb eating, I simply say that I am pre-diabetic and for my own health I'm not able to eat sugars or carbohydrates unless they are natural, like those found in veggies. Anway, that's my story on that.