Nutritional ketosis and ketoacidosis are two different things. Ketoacidosis is a life threatening condition while nutritional ketosis is a metabolic state that humans were in for about 2.6 million years. The major cause of metabolic syndrome is carbohydrate intolerance. We eat many more carbohydrates that we can safely metabolize. This deviation from our genetic disposition results in high blood pressure, diabetes, obesity, high triglycerides and all kinds of cardiovascular diseases.
Please read the relevant medical literature before lumping the two in one category. A couple of names to google: Steve Phinney, Jeff Volek, Chris Masterjohn, David Perlmutter, William Davis, Eric Westman, Robb Wolf, and Gary Taubes.