I tend not to emphasize the “fats” part of it. I basically just say, “I cut out the sugar”, and most everyone thinks that’s a good thing, and “I cut out the heavy starches.” Mostly, they don’t say a whole lot about that part of it because it takes them a while to process what that really means. If they do, I’ll go into more of the detail about leaving behind, potatoes, bread, pasta, rice, that kind of thing. And a lot of times, they’ll kinda get that, too, because it’s not a huge stretch for them to think about not eating bread and losing some weight.
So far, I only have one friend that is receptive enough that she’s actually willing to consider a keto diet. She hasn’t done it yet, but at least she’s thinking about it.
Many of the people in my circles are trying to be either vegan or vegetarian so I tend not to try to impose my own decisions and opinions on them. I get some dirty looks sometimes when I mention that I am neither a vegan nor a vegetarian anymore but I suspect as I drop down below the point where I no longer have “obese” behind my weight (only about 30 pounds to go), I may have a bit more credibility in what’s worked for me.