You should get your protein from different sources and not rely on just one kind of protein. One benefit of protein from tuna would be that it'll have some EFA's and if you're needing a fuller feeling the tuna will be slower to digest. If your whey protein is made into a shake with ice, you will burn some extra cal's heating it up and the whey is more easilly digested making the nutrients more quickly available to your body. Canned tuna has been processed to some extent and loaded with sodium, fresh tuna would be much better. There is some research that shows regular consumption of whey protein helps fight/prevent cancer.

Puddles, Thanks...by any chance do you know anything about egg white protein in that does the protein disappear or change into something else????? If it is blended for 30secs or less just to get the slimmy stuff to break down?

Mixing it won't destroy it's properties.

I have been trying to tell my friend that and he insists that the protein changes some how. YOu are awsome thanks for the response. I f I have any more diet questions I will ask! I am so glad my friend gave me this forum to hang out in...................

hey saphire i just saw this post; welcome to 'Ology
and puddles you are awesome! saphire, there are sooo many things you can do to eggs whites to reduce the "sliminess"; sometimes i add them into my shakes as well.
like puddles said; it's generally better to use shakes as supplements, and eat a good amount and variety of whole foods. also keep in mind that whole foods have more fiber than liquid shakes.
good luck and dont hesitate to post more q's!
~MINX