"It depends".
Ron krass found some adverse effects from meat and saturated fat together. A lot of the saturated fat was dairy fat in this study but it didn't look too good. I think it's best to be sensible and follow the "all good things in moderation" way of thinking. Just because something isn't harmful if sensible doses doesn't mean the more the better. Like most things I think there tends to be a U shaped curve
Ron Krauss – Saturated Fat? Red Meat? It Depends . . . | Me and My Diabetes
"So using what you learned from your 2006 study of a mixed-protein diet and high saturated fats, in this new study, you kept carbohydrates somewhat low, and fats somewhat higher, just as you did in 2006. Really, the main difference was that this time, you didn’t feed a variety of protein sources. Your test subjects just ate lots and lots of beef. And this time, you found that “healthy” blood work depended not only on what kind of protein people ate, but what kind of fat the people WITH the protein. So if you get out your Sherlock Holmes hat and pipe, what were the clues and what did they mean?
RON KRAUSS
To begin with, keep in mind, this was a very high beef diet. People were eating beef breakfast lunch and dinner. So this is really way outside of what we would ever consider to be a usual health practice. Maybe some people do it. But not many. We were really interested in the metabolic impact of this diet. To get as many clues as possible, we fed people in either the context of lean beef alone, or with extra saturated fat, mostly from diary products. Again, that’s because most of the saturated fat we get in our diet comes from dairy products. There’s some saturated fat in beef, but more in dairy fat. To make things as clear-cut as possible, in this study, we fed the same beef product to two groups. Lean beef, low in fat, without any added saturated fat. For one group, we added lots of dairy fat, to increase saturated fat. For the other group, we kept saturated fat low, but kept total fat basically the same by using an unsaturated fat–basically olive oil. So between the two groups, let’s say the difference was the equivalent of a cheeseburger versus a lean hamburger dressed with olive oil. That sort of describes, in a nutshell the kind of differences we were looking for. When we did blood work on the groups, the group who ate lots of beef with low saturated fat, meaning the olive oil, didn’t seem to have any adverse effects."