Dr. Eenfeldt of DietDoctor.com gave a talk at the inaugural Ancestral Health Symposium in California, on the rationale of the current low-carb, high-fat diet (LCHF) so popular in his home country of Sweden. It’s very understandable to the general public and is a good introduction to low-carb eating. The entire YouTube video is 55 minutes; if you’re pressed for time, skip the 10-minute Q&A at the end.
He also discusses the benefits of LCHF eating for his patients with diabetes.
If you reduce carbohydrate, you’re going to replace it with either protein, fat, or both. Carbohydrate restriction, whether or not part of a Paleolithic eating pattern, generally improves blood sugar levels, especially in people with diabetes.