Wiktionary
adv. Concerning nutrition.
WordNet
adv. with regard to nutrition; "nutritionally, her new diet is suicide"
Usage examples of "nutritionally".
Sludge or peanut-butter sandwiches with reconstituted dry milk are nutritionally complete, I cannot prove.
In this sense, one carbohydrate is more or less nutritionally equivalent to any other because they must all be converted to glucose, the simplest sugar of all, before we can use them.
Soy protein has been shown to be nutritionally better than animal protein and can be used as your sole source of daily protein.
I have learned from long, hard, repetitive experience that food processors can, will, and do put sugar, corn syrup, corn starch, and other nutritionally empty, carb-filled garbage into every conceivable food product.
But Andy maintained that nutritionally, fresh and fresh-frozen must be almost the same and Becky had conceded the point for, of course, she hoped the statistical balance would tip in favor of freshness even though none of this was a contest, Andy had assured her.
Divisti and Lunzie had collaborated and produced a pulp from the greenery that might be nutritionally correct but had such a nauseating taste and curious consistency that only the heavy-worlders would eat it.
However, even if by some chance I remember wrong, and you are correct, what right do you have to assume that semen is nutritionally equivalent to egg white and derive your answer from that?