The problem isn’t that nutrition researchers refuse to make black and white declarations from complex and incomplete data. The problem is that that is exactly what they seem prone to doing. Things like making claims of causality when there is no experimental data to support it. If you don’t want to do controlled trials, for whatever reason, that’s your call. However, if you then turn around and make statements regarding causation and recommendations based on them, then you are, at best, unreliable and suspect.
