Are you saying God and a nutritionists’ words have the same validity? When they have the same validity, you’ll have something, until then the statement and comparison fail.
Wrong. When God says the sky is blue, it's no more valid than when the nutritionist says it; it's called "truth."
You're trying to make truth relative.
And by the way, when you say God said something He DIDN'T say, you're taking the Lord's name in vain.