Going into it, I was under the belief that it would be a how comparing the health benefits of dietary changes and/or patterns within a sample group of identical twins...which would be a very intriguing and hopefully insightful study (to me).
Unfortunately, this was not the case. The 'scientific' study represented a manipulation of the data (aka cherry picking) to support mostly political movements. The guise was so overt in the later episodes that it became difficult to watch.
Another example of the bait-and-switch that Netflix-produced content have been notoriously known for in the past.