I enjoyed your phrase &quot;often said to be unhealthy.&quot;<p>I&#x27;m glad the nutrition field is willing to admit errors and update guidance. I&#x27;m a little disappointed with the high frequency.<p>I did 30 seconds of research, and found out dietitian and nutritionist are not synonyms. Dietitians seem to use nutrition to achieve specific medical or performance outcomes. In that context, it makes sense to have lots of changes as the bleeding edge advances.