This is a subject I have become quite interested in lately. What I can determine so far is that there is much in this debate that is not settled one way or the other. I would be interested in seeing more evidence and science based research on this subject. It seems much more research needs to be done.
I am looking for skeptical evidence based responses to cases like
The China Study and
Forks Over Knives. Personally I am eating mainly vegan now to lose weight and improve my cholesterol and blood pressure. I may return to eating meat occasionally when I meet my weight goals. There does seem to be growing evidence for other benefits from a plant based diet.
It could be that meat is not "bad" for you, but other things are better.
Here is one study I just read about;
http://www.sciencebasedmedicine.org/...-the-kitavans/
The Kitava study serves as a disconfirming example to discredit the claims made for low-carb diets. Kitavans eat a very high-carb diet, with lots of saturated fat and little protein, and they appear to thrive on it without becoming obese or developing a high incidence of metabolic syndrome as the low-carb theorists would predict.
It is evidence against the hypothesis that low-fat diet recommendations caused the obesity “epidemic” simply because people replaced fat with carbohydrates. It shows that a diet high in carbohydrates does not necessarily lead to obesity, especially if they are complex carbohydrates and the total calorie intake is not excessive.
It supports the general consensus of most diet experts that a predominately plant-based diet is healthy. It supports Mom’s admonishments to eat our vegetables.
It suggests that saturated fat need not be avoided, especially if it is of vegetable rather than animal origin.
It tends to confirm the health benefits of weight control and the principle that weight can be controlled simply by limiting calories. The Kitavans are not overweight, and their intake of calories is lower than the conventional Western diet.
It tends to support advice to avoid processed foods and refined carbohydrates.
It reinforces the concept that humans can thrive on a wide variety of diets.